Regenerated all VTIMEZONEs, to be compatable with Outlook Web Access. They

2001-10-30 Damon Chaplin <damon@ximian.com> * zoneinfo/*.ics: Regenerated all VTIMEZONEs, to be compatable with Outlook Web Access. They now only include 2 RRULEs components or 1 simple DTSTART component. svn path=/trunk/; revision=14454
author: Damon Chaplin <damon@ximian.com> 2001-10-30 20:45:30 +0800
committer: Damon Chaplin <damon@src.gnome.org> 2001-10-30 20:45:30 +0800
commit: 5f9a5038388148ab306c0418653c0018dfbedcd7 (patch)
tree: 4eabed2ab36448ee00e6819800aaefd96a129c12 /libical
parent: dc918f67f310428b4f0ef3b098b1136e17f42668 (diff)
download: gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.tar.gz
gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.tar.zst
gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.zip
378 files changed, 1035 insertions, 20983 deletions
diff --git a/libical/ChangeLog b/libical/ChangeLog
index ed0ca6845e..476b18e158 100644
--- a/libical/ChangeLog
+++ b/libical/ChangeLog
@@ -1,3 +1,9 @@
+2001-10-30  Damon Chaplin  <damon@ximian.com>
+
+	* zoneinfo/*.ics: Regenerated all VTIMEZONEs, to be compatable with
+	Outlook Web Access. They now only include 2 RRULEs components or
+	1 simple DTSTART component.
+
 2001-10-29  Damon Chaplin  <damon@ximian.com>
 
 	* src/libical/Makefile.am: renamed the library to libical-evolution.la,
diff --git a/libical/zoneinfo/Africa/Abidjan.ics b/libical/zoneinfo/Africa/Abidjan.ics
index a98c9d082c..88b139f615 100644
--- a/libical/zoneinfo/Africa/Abidjan.ics
+++ b/libical/zoneinfo/Africa/Abidjan.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Abidjan
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Abidjan
 X-LIC-LOCATION:Africa/Abidjan
 BEGIN:STANDARD
-TZOFFSETFROM:-0016
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Accra.ics b/libical/zoneinfo/Africa/Accra.ics
index 23f65800db..e656c92f74 100644
--- a/libical/zoneinfo/Africa/Accra.ics
+++ b/libical/zoneinfo/Africa/Accra.ics
@@ -2,40 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Accra
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Accra
 X-LIC-LOCATION:Africa/Accra
 BEGIN:STANDARD
-TZOFFSETFROM:+0020
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19421231T000000
-RDATE:19421231T000000
-RDATE:19411231T000000
-RDATE:19401231T000000
-RDATE:19391231T000000
-RDATE:19381231T000000
-RDATE:19371231T000000
-RDATE:19361231T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
-TZOFFSETTO:+0020
-TZNAME:GHST
-DTSTART:19420901T000000
-RDATE:19420901T000000
-RDATE:19410901T000000
-RDATE:19400901T000000
-RDATE:19390901T000000
-RDATE:19380901T000000
-RDATE:19370901T000000
-RDATE:19360901T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0001
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19180101T000000
-RDATE:19180101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Addis_Ababa.ics b/libical/zoneinfo/Africa/Addis_Ababa.ics
index f6f289ebf2..baed76bb70 100644
--- a/libical/zoneinfo/Africa/Addis_Ababa.ics
+++ b/libical/zoneinfo/Africa/Addis_Ababa.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Addis_Ababa
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Addis_Ababa
 X-LIC-LOCATION:Africa/Addis_Ababa
 BEGIN:STANDARD
-TZOFFSETFROM:+0235
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19360505T000000
-RDATE:19360505T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0235
-TZOFFSETTO:+0235
-TZNAME:ADMT
-DTSTART:18700101T000000
-RDATE:18700101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Algiers.ics b/libical/zoneinfo/Africa/Algiers.ics
index 05a04ddac0..c188e61da7 100644
--- a/libical/zoneinfo/Africa/Algiers.ics
+++ b/libical/zoneinfo/Africa/Algiers.ics
@@ -2,89 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Algiers
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Algiers
 X-LIC-LOCATION:Africa/Algiers
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19810501T000000
-RDATE:19810501T000000
-RDATE:19560129T000000
-RDATE:19400225T020000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19801031T020000
-RDATE:19801031T020000
-RDATE:19791026T000000
-RDATE:19710927T000000
-RDATE:19630414T000000
-RDATE:19461007T000000
-RDATE:19391119T010000
-RDATE:19210622T000000
-RDATE:19201024T000000
-RDATE:19191006T000000
-RDATE:19181007T000000
-RDATE:19171008T000000
-RDATE:19161002T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19800425T000000
-RDATE:19800425T000000
-RDATE:19770506T000000
-RDATE:19710425T230000
-RDATE:19390911T230000
-RDATE:19210314T230000
-RDATE:19200214T230000
-RDATE:19190301T230000
-RDATE:19180309T230000
-RDATE:19170324T230000
-RDATE:19160614T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19780922T030000
-RDATE:19780922T030000
-RDATE:19450916T010000
-RDATE:19441008T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19780324T010000
-RDATE:19780324T010000
-RDATE:19450402T020000
-RDATE:19440403T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19771021T000000
-RDATE:19771021T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0009
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19110311T000000
-RDATE:19110311T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0012
-TZOFFSETTO:+0009
-TZNAME:PMT
-DTSTART:18910315T000100
-RDATE:18910315T000100
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Asmera.ics b/libical/zoneinfo/Africa/Asmera.ics
index 1a64c78137..76d5699e79 100644
--- a/libical/zoneinfo/Africa/Asmera.ics
+++ b/libical/zoneinfo/Africa/Asmera.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Asmera
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Asmera
 X-LIC-LOCATION:Africa/Asmera
 BEGIN:STANDARD
-TZOFFSETFROM:+0235
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19360505T000000
-RDATE:19360505T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0236
-TZOFFSETTO:+0235
-TZNAME:ADMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0236
-TZOFFSETTO:+0236
-TZNAME:AMT
-DTSTART:18700101T000000
-RDATE:18700101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Bamako.ics b/libical/zoneinfo/Africa/Bamako.ics
index bad9845111..bfa290ecd0 100644
--- a/libical/zoneinfo/Africa/Bamako.ics
+++ b/libical/zoneinfo/Africa/Bamako.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Bamako
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Bamako
 X-LIC-LOCATION:Africa/Bamako
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19600620T000000
-RDATE:19600620T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19340226T000000
-RDATE:19340226T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0032
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Bangui.ics b/libical/zoneinfo/Africa/Bangui.ics
index b92b1509e1..bccb9bdbde 100644
--- a/libical/zoneinfo/Africa/Bangui.ics
+++ b/libical/zoneinfo/Africa/Bangui.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Bangui
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Bangui
 X-LIC-LOCATION:Africa/Bangui
 BEGIN:STANDARD
-TZOFFSETFROM:+0114
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Banjul.ics b/libical/zoneinfo/Africa/Banjul.ics
index 06e6c15d8d..260425eff8 100644
--- a/libical/zoneinfo/Africa/Banjul.ics
+++ b/libical/zoneinfo/Africa/Banjul.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Banjul
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Banjul
 X-LIC-LOCATION:Africa/Banjul
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19640101T000000
-RDATE:19640101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0107
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19350101T000000
-RDATE:19350101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0107
-TZOFFSETTO:-0107
-TZNAME:BMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Bissau.ics b/libical/zoneinfo/Africa/Bissau.ics
index c6d9a36b67..9dd1b8f6fe 100644
--- a/libical/zoneinfo/Africa/Bissau.ics
+++ b/libical/zoneinfo/Africa/Bissau.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Bissau
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Bissau
 X-LIC-LOCATION:Africa/Bissau
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19750101T000000
-RDATE:19750101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0102
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19110526T000000
-RDATE:19110526T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Blantyre.ics b/libical/zoneinfo/Africa/Blantyre.ics
index cc7cd4d5fb..3f1e457fb7 100644
--- a/libical/zoneinfo/Africa/Blantyre.ics
+++ b/libical/zoneinfo/Africa/Blantyre.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Blantyre
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Blantyre
 X-LIC-LOCATION:Africa/Blantyre
 BEGIN:STANDARD
-TZOFFSETFROM:+0220
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Brazzaville.ics b/libical/zoneinfo/Africa/Brazzaville.ics
index 1f548000ae..58bda78a8d 100644
--- a/libical/zoneinfo/Africa/Brazzaville.ics
+++ b/libical/zoneinfo/Africa/Brazzaville.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Brazzaville
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Brazzaville
 X-LIC-LOCATION:Africa/Brazzaville
 BEGIN:STANDARD
-TZOFFSETFROM:+0101
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Bujumbura.ics b/libical/zoneinfo/Africa/Bujumbura.ics
index 50689ba5bf..2d9be57f44 100644
--- a/libical/zoneinfo/Africa/Bujumbura.ics
+++ b/libical/zoneinfo/Africa/Bujumbura.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Bujumbura
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Bujumbura
 X-LIC-LOCATION:Africa/Bujumbura
 BEGIN:STANDARD
-TZOFFSETFROM:+0157
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Cairo.ics b/libical/zoneinfo/Africa/Cairo.ics
index d5dc48dc92..e389677d3b 100644
--- a/libical/zoneinfo/Africa/Cairo.ics
+++ b/libical/zoneinfo/Africa/Cairo.ics
@@ -2,128 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Cairo
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Cairo
 X-LIC-LOCATION:Africa/Cairo
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19950428T000000
+DTSTART:19700424T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=-1FR
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19950929T000000
+DTSTART:19700925T000000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1FR
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19941001T030000
-RDATE:19941001T030000
-RDATE:19931001T030000
-RDATE:19921001T030000
-RDATE:19911001T030000
-RDATE:19901001T030000
-RDATE:19891001T030000
-RDATE:19881001T030000
-RDATE:19871001T030000
-RDATE:19861001T030000
-RDATE:19851001T030000
-RDATE:19841001T030000
-RDATE:19831001T030000
-RDATE:19821001T030000
-RDATE:19811001T030000
-RDATE:19801001T030000
-RDATE:19791001T030000
-RDATE:19781001T030000
-RDATE:19771001T030000
-RDATE:19761001T030000
-RDATE:19751001T030000
-RDATE:19741001T030000
-RDATE:19731001T030000
-RDATE:19721001T030000
-RDATE:19711001T030000
-RDATE:19701001T030000
-RDATE:19691001T030000
-RDATE:19681001T030000
-RDATE:19671001T030000
-RDATE:19661001T030000
-RDATE:19650930T030000
-RDATE:19640930T030000
-RDATE:19630930T030000
-RDATE:19620930T030000
-RDATE:19610930T030000
-RDATE:19600930T030000
-RDATE:19590930T030000
-RDATE:19581001T000000
-RDATE:19571001T000000
-RDATE:19451101T000000
-RDATE:19441101T000000
-RDATE:19431101T000000
-RDATE:19421027T000000
-RDATE:19410916T000000
-RDATE:19401001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19940501T010000
-RDATE:19940501T010000
-RDATE:19930501T010000
-RDATE:19920501T010000
-RDATE:19910501T010000
-RDATE:19900501T010000
-RDATE:19890506T010000
-RDATE:19880501T010000
-RDATE:19870501T010000
-RDATE:19860501T010000
-RDATE:19850501T010000
-RDATE:19840501T010000
-RDATE:19830712T010000
-RDATE:19820725T010000
-RDATE:19810501T010000
-RDATE:19800501T010000
-RDATE:19790501T010000
-RDATE:19780501T010000
-RDATE:19770501T010000
-RDATE:19760501T010000
-RDATE:19750501T010000
-RDATE:19740501T010000
-RDATE:19730501T010000
-RDATE:19720501T010000
-RDATE:19710501T010000
-RDATE:19700501T010000
-RDATE:19690501T010000
-RDATE:19680501T010000
-RDATE:19670501T010000
-RDATE:19660501T010000
-RDATE:19650501T010000
-RDATE:19640501T010000
-RDATE:19630501T010000
-RDATE:19620501T010000
-RDATE:19610501T010000
-RDATE:19600501T010000
-RDATE:19590501T010000
-RDATE:19580501T000000
-RDATE:19570510T000000
-RDATE:19450416T000000
-RDATE:19440401T000000
-RDATE:19430401T000000
-RDATE:19420401T000000
-RDATE:19410415T000000
-RDATE:19400715T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0205
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19001001T000000
-RDATE:19001001T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Casablanca.ics b/libical/zoneinfo/Africa/Casablanca.ics
index a895eb0e2d..5490ee8923 100644
--- a/libical/zoneinfo/Africa/Casablanca.ics
+++ b/libical/zoneinfo/Africa/Casablanca.ics
@@ -2,50 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Casablanca
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Casablanca
 X-LIC-LOCATION:Africa/Casablanca
 BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19860101T000000
-RDATE:19860101T000000
-RDATE:19780804T000000
-RDATE:19770928T000000
-RDATE:19760801T000000
-RDATE:19740901T000000
-RDATE:19671001T000000
-RDATE:19501029T000000
-RDATE:19451118T000000
-RDATE:19391119T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19840316T000000
-RDATE:19840316T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19780601T000000
-RDATE:19780601T000000
-RDATE:19770501T000000
-RDATE:19760501T000000
-RDATE:19740624T000000
-RDATE:19670603T120000
-RDATE:19500611T000000
-RDATE:19400225T000000
-RDATE:19390912T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0030
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19131026T000000
-RDATE:19131026T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Ceuta.ics b/libical/zoneinfo/Africa/Ceuta.ics
index 3787c1cbd1..7e5e530fbe 100644
--- a/libical/zoneinfo/Africa/Ceuta.ics
+++ b/libical/zoneinfo/Africa/Ceuta.ics
@@ -2,98 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Ceuta
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Ceuta
 X-LIC-LOCATION:Africa/Ceuta
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19860330T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19860101T000000
-RDATE:19860101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19840316T000000
-RDATE:19840316T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19780804T000000
-RDATE:19780804T000000
-RDATE:19770928T000000
-RDATE:19760801T000000
-RDATE:19740901T000000
-RDATE:19671001T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19241005T000000
-RDATE:19181007T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19780601T000000
-RDATE:19780601T000000
-RDATE:19770501T000000
-RDATE:19760501T000000
-RDATE:19740624T000000
-RDATE:19670603T120000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19240416T230000
-RDATE:19180506T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19290101T000000
-RDATE:19290101T000000
-RDATE:19240101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0021
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19010101T000000
-RDATE:19010101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Conakry.ics b/libical/zoneinfo/Africa/Conakry.ics
index e8798d9692..4afba60896 100644
--- a/libical/zoneinfo/Africa/Conakry.ics
+++ b/libical/zoneinfo/Africa/Conakry.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Conakry
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Conakry
 X-LIC-LOCATION:Africa/Conakry
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19600101T000000
-RDATE:19600101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19340226T000000
-RDATE:19340226T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0055
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Dakar.ics b/libical/zoneinfo/Africa/Dakar.ics
index fe7bfa687a..ccfdb5b484 100644
--- a/libical/zoneinfo/Africa/Dakar.ics
+++ b/libical/zoneinfo/Africa/Dakar.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Dakar
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Dakar
 X-LIC-LOCATION:Africa/Dakar
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19410601T000000
-RDATE:19410601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0110
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Dar_es_Salaam.ics b/libical/zoneinfo/Africa/Dar_es_Salaam.ics
index bac16b566e..d8148c76b2 100644
--- a/libical/zoneinfo/Africa/Dar_es_Salaam.ics
+++ b/libical/zoneinfo/Africa/Dar_es_Salaam.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Dar_es_Salaam
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Dar_es_Salaam
 X-LIC-LOCATION:Africa/Dar_es_Salaam
 BEGIN:STANDARD
-TZOFFSETFROM:+0245
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:19610101T000000
-RDATE:19610101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0245
-TZNAME:BEAUT
-DTSTART:19480101T000000
-RDATE:19480101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0237
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19310101T000000
-RDATE:19310101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Djibouti.ics b/libical/zoneinfo/Africa/Djibouti.ics
index 4796d31195..0885e36b37 100644
--- a/libical/zoneinfo/Africa/Djibouti.ics
+++ b/libical/zoneinfo/Africa/Djibouti.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Djibouti
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Djibouti
 X-LIC-LOCATION:Africa/Djibouti
 BEGIN:STANDARD
-TZOFFSETFROM:+0253
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Douala.ics b/libical/zoneinfo/Africa/Douala.ics
index fd791a6b8d..866e975fdb 100644
--- a/libical/zoneinfo/Africa/Douala.ics
+++ b/libical/zoneinfo/Africa/Douala.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Douala
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Douala
 X-LIC-LOCATION:Africa/Douala
 BEGIN:STANDARD
-TZOFFSETFROM:+0039
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/El_Aaiun.ics b/libical/zoneinfo/Africa/El_Aaiun.ics
index 8f326ecd3a..e8a8151320 100644
--- a/libical/zoneinfo/Africa/El_Aaiun.ics
+++ b/libical/zoneinfo/Africa/El_Aaiun.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/El_Aaiun
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/El_Aaiun
 X-LIC-LOCATION:Africa/El_Aaiun
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19760414T000000
-RDATE:19760414T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0053
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19340101T000000
-RDATE:19340101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Freetown.ics b/libical/zoneinfo/Africa/Freetown.ics
index d7d77d78a4..9ad13410d4 100644
--- a/libical/zoneinfo/Africa/Freetown.ics
+++ b/libical/zoneinfo/Africa/Freetown.ics
@@ -2,80 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Freetown
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Freetown
 X-LIC-LOCATION:Africa/Freetown
 BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19620901T000000
-RDATE:19620901T000000
-RDATE:19610901T000000
-RDATE:19600901T000000
-RDATE:19590901T000000
-RDATE:19580901T000000
-RDATE:19570901T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:SLST
-DTSTART:19620601T000000
-RDATE:19620601T000000
-RDATE:19610601T000000
-RDATE:19600601T000000
-RDATE:19590601T000000
-RDATE:19580601T000000
-RDATE:19570601T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19570101T000000
-RDATE:19570101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0020
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19421001T000000
-RDATE:19421001T000000
-RDATE:19411001T000000
-RDATE:19401001T000000
-RDATE:19391001T000000
-RDATE:19381001T000000
-RDATE:19371001T000000
-RDATE:19361001T000000
-RDATE:19351001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0100
-TZOFFSETTO:-0020
-TZNAME:SLST
-DTSTART:19420601T000000
-RDATE:19420601T000000
-RDATE:19410601T000000
-RDATE:19400601T000000
-RDATE:19390601T000000
-RDATE:19380601T000000
-RDATE:19370601T000000
-RDATE:19360601T000000
-RDATE:19350601T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0053
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19130601T000000
-RDATE:19130601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0053
-TZOFFSETTO:-0053
-TZNAME:FMT
-DTSTART:18820101T000000
-RDATE:18820101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Gaborone.ics b/libical/zoneinfo/Africa/Gaborone.ics
index db5ab94e63..953a9beff9 100644
--- a/libical/zoneinfo/Africa/Gaborone.ics
+++ b/libical/zoneinfo/Africa/Gaborone.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Gaborone
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Gaborone
 X-LIC-LOCATION:Africa/Gaborone
 BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CAT
-DTSTART:19440319T020000
-RDATE:19440319T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:CAST
-DTSTART:19430919T020000
-RDATE:19430919T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0144
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:18850101T000000
-RDATE:18850101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Harare.ics b/libical/zoneinfo/Africa/Harare.ics
index 708c502a1f..81f6b0b37f 100644
--- a/libical/zoneinfo/Africa/Harare.ics
+++ b/libical/zoneinfo/Africa/Harare.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Harare
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Harare
 X-LIC-LOCATION:Africa/Harare
 BEGIN:STANDARD
-TZOFFSETFROM:+0204
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Johannesburg.ics b/libical/zoneinfo/Africa/Johannesburg.ics
index 2a43d9dc83..169211e2d2 100644
--- a/libical/zoneinfo/Africa/Johannesburg.ics
+++ b/libical/zoneinfo/Africa/Johannesburg.ics
@@ -2,37 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Johannesburg
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Johannesburg
 X-LIC-LOCATION:Africa/Johannesburg
 BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:SAST
-DTSTART:19440319T020000
-RDATE:19440319T020000
-RDATE:19430321T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:SAST
-DTSTART:19430919T020000
-RDATE:19430919T020000
-RDATE:19420920T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0130
 TZOFFSETTO:+0200
 TZNAME:SAST
-DTSTART:19030301T000000
-RDATE:19030301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0152
-TZOFFSETTO:+0130
-TZNAME:SAST
-DTSTART:18920208T000000
-RDATE:18920208T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Kampala.ics b/libical/zoneinfo/Africa/Kampala.ics
index e178a514ed..9daede7074 100644
--- a/libical/zoneinfo/Africa/Kampala.ics
+++ b/libical/zoneinfo/Africa/Kampala.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Kampala
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Kampala
 X-LIC-LOCATION:Africa/Kampala
 BEGIN:STANDARD
-TZOFFSETFROM:+0245
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:19570101T000000
-RDATE:19570101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0230
-TZOFFSETTO:+0245
-TZNAME:BEAUT
-DTSTART:19480101T000000
-RDATE:19480101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0230
-TZNAME:BEAT
-DTSTART:19300101T000000
-RDATE:19300101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0210
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19280701T000000
-RDATE:19280701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Khartoum.ics b/libical/zoneinfo/Africa/Khartoum.ics
index 81320e2632..410c8ac578 100644
--- a/libical/zoneinfo/Africa/Khartoum.ics
+++ b/libical/zoneinfo/Africa/Khartoum.ics
@@ -2,65 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Khartoum
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Khartoum
 X-LIC-LOCATION:Africa/Khartoum
 BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:20000115T120000
-RDATE:20000115T120000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CAT
-DTSTART:19851015T000000
-RDATE:19851015T000000
-RDATE:19841015T000000
-RDATE:19831015T000000
-RDATE:19821015T000000
-RDATE:19811015T000000
-RDATE:19801015T000000
-RDATE:19791015T000000
-RDATE:19781015T000000
-RDATE:19771015T000000
-RDATE:19761015T000000
-RDATE:19751015T000000
-RDATE:19741015T000000
-RDATE:19731015T000000
-RDATE:19721015T000000
-RDATE:19711015T000000
-RDATE:19701015T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
-TZNAME:CAST
-DTSTART:19850428T000000
-RDATE:19850428T000000
-RDATE:19840429T000000
-RDATE:19830424T000000
-RDATE:19820425T000000
-RDATE:19810426T000000
-RDATE:19800427T000000
-RDATE:19790429T000000
-RDATE:19780430T000000
-RDATE:19770424T000000
-RDATE:19760425T000000
-RDATE:19750427T000000
-RDATE:19740428T000000
-RDATE:19730429T000000
-RDATE:19720430T000000
-RDATE:19710430T000000
-RDATE:19700501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0210
-TZOFFSETTO:+0200
-TZNAME:CAT
-DTSTART:19310101T000000
-RDATE:19310101T000000
+TZNAME:EAT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Kigali.ics b/libical/zoneinfo/Africa/Kigali.ics
index 7aa05885e3..d8815ebafa 100644
--- a/libical/zoneinfo/Africa/Kigali.ics
+++ b/libical/zoneinfo/Africa/Kigali.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Kigali
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Kigali
 X-LIC-LOCATION:Africa/Kigali
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:19350601T000000
-RDATE:19350601T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Kinshasa.ics b/libical/zoneinfo/Africa/Kinshasa.ics
index 917878501a..072a7f0195 100644
--- a/libical/zoneinfo/Africa/Kinshasa.ics
+++ b/libical/zoneinfo/Africa/Kinshasa.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Kinshasa
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Kinshasa
 X-LIC-LOCATION:Africa/Kinshasa
 BEGIN:STANDARD
-TZOFFSETFROM:+0101
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:18971109T000000
-RDATE:18971109T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Lagos.ics b/libical/zoneinfo/Africa/Lagos.ics
index 656e00263a..61e2fb23f8 100644
--- a/libical/zoneinfo/Africa/Lagos.ics
+++ b/libical/zoneinfo/Africa/Lagos.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Lagos
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Lagos
 X-LIC-LOCATION:Africa/Lagos
 BEGIN:STANDARD
-TZOFFSETFROM:+0014
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19190901T000000
-RDATE:19190901T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Libreville.ics b/libical/zoneinfo/Africa/Libreville.ics
index 1b7f78c182..b67424043c 100644
--- a/libical/zoneinfo/Africa/Libreville.ics
+++ b/libical/zoneinfo/Africa/Libreville.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Libreville
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Libreville
 X-LIC-LOCATION:Africa/Libreville
 BEGIN:STANDARD
-TZOFFSETFROM:+0038
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Lome.ics b/libical/zoneinfo/Africa/Lome.ics
index be516248ce..e1703f5e54 100644
--- a/libical/zoneinfo/Africa/Lome.ics
+++ b/libical/zoneinfo/Africa/Lome.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Lome
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Lome
 X-LIC-LOCATION:Africa/Lome
 BEGIN:STANDARD
-TZOFFSETFROM:+0005
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:18930101T000000
-RDATE:18930101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Luanda.ics b/libical/zoneinfo/Africa/Luanda.ics
index d9d8b99cd1..c2283b5922 100644
--- a/libical/zoneinfo/Africa/Luanda.ics
+++ b/libical/zoneinfo/Africa/Luanda.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Luanda
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Luanda
 X-LIC-LOCATION:Africa/Luanda
 BEGIN:STANDARD
-TZOFFSETFROM:+0052
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19110526T000000
-RDATE:19110526T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0053
-TZOFFSETTO:+0052
-TZNAME:AOT
-DTSTART:18920101T000000
-RDATE:18920101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Lubumbashi.ics b/libical/zoneinfo/Africa/Lubumbashi.ics
index b96b311c22..10eccfc4af 100644
--- a/libical/zoneinfo/Africa/Lubumbashi.ics
+++ b/libical/zoneinfo/Africa/Lubumbashi.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Lubumbashi
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Lubumbashi
 X-LIC-LOCATION:Africa/Lubumbashi
 BEGIN:STANDARD
-TZOFFSETFROM:+0150
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:18971109T000000
-RDATE:18971109T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Lusaka.ics b/libical/zoneinfo/Africa/Lusaka.ics
index 15faf7febf..339c568aaa 100644
--- a/libical/zoneinfo/Africa/Lusaka.ics
+++ b/libical/zoneinfo/Africa/Lusaka.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Lusaka
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Lusaka
 X-LIC-LOCATION:Africa/Lusaka
 BEGIN:STANDARD
-TZOFFSETFROM:+0153
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Malabo.ics b/libical/zoneinfo/Africa/Malabo.ics
index 6175cee3f2..e1a5445854 100644
--- a/libical/zoneinfo/Africa/Malabo.ics
+++ b/libical/zoneinfo/Africa/Malabo.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Malabo
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Malabo
 X-LIC-LOCATION:Africa/Malabo
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19631215T000000
-RDATE:19631215T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0035
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Maputo.ics b/libical/zoneinfo/Africa/Maputo.ics
index 2c77238a59..f1dab41a16 100644
--- a/libical/zoneinfo/Africa/Maputo.ics
+++ b/libical/zoneinfo/Africa/Maputo.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Maputo
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Maputo
 X-LIC-LOCATION:Africa/Maputo
 BEGIN:STANDARD
-TZOFFSETFROM:+0210
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:CAT
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Maseru.ics b/libical/zoneinfo/Africa/Maseru.ics
index cd6bd37b40..d486fe2278 100644
--- a/libical/zoneinfo/Africa/Maseru.ics
+++ b/libical/zoneinfo/Africa/Maseru.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Maseru
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Maseru
 X-LIC-LOCATION:Africa/Maseru
 BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:SAST
-DTSTART:19440319T020000
-RDATE:19440319T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:SAST
-DTSTART:19430919T020000
-RDATE:19430919T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0150
 TZOFFSETTO:+0200
 TZNAME:SAST
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Mbabane.ics b/libical/zoneinfo/Africa/Mbabane.ics
index 2272cf4dc3..345a2c927b 100644
--- a/libical/zoneinfo/Africa/Mbabane.ics
+++ b/libical/zoneinfo/Africa/Mbabane.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Mbabane
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Mbabane
 X-LIC-LOCATION:Africa/Mbabane
 BEGIN:STANDARD
-TZOFFSETFROM:+0204
+TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:SAST
-DTSTART:19030301T000000
-RDATE:19030301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Mogadishu.ics b/libical/zoneinfo/Africa/Mogadishu.ics
index d800b54658..3161cef17d 100644
--- a/libical/zoneinfo/Africa/Mogadishu.ics
+++ b/libical/zoneinfo/Africa/Mogadishu.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Mogadishu
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Mogadishu
 X-LIC-LOCATION:Africa/Mogadishu
 BEGIN:STANDARD
-TZOFFSETFROM:+0230
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:19570101T000000
-RDATE:19570101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0230
-TZNAME:BEAT
-DTSTART:19310101T000000
-RDATE:19310101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0301
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:18931101T000000
-RDATE:18931101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Monrovia.ics b/libical/zoneinfo/Africa/Monrovia.ics
index 2e22c648d9..75aaab3332 100644
--- a/libical/zoneinfo/Africa/Monrovia.ics
+++ b/libical/zoneinfo/Africa/Monrovia.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Monrovia
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Monrovia
 X-LIC-LOCATION:Africa/Monrovia
 BEGIN:STANDARD
-TZOFFSETFROM:-0044
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19720501T000000
-RDATE:19720501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0043
-TZOFFSETTO:-0044
-TZNAME:LRT
-DTSTART:19190301T000000
-RDATE:19190301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0043
-TZOFFSETTO:-0043
-TZNAME:MMT
-DTSTART:18820101T000000
-RDATE:18820101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Nairobi.ics b/libical/zoneinfo/Africa/Nairobi.ics
index 52f918f48c..0fa8b28dba 100644
--- a/libical/zoneinfo/Africa/Nairobi.ics
+++ b/libical/zoneinfo/Africa/Nairobi.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Nairobi
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Nairobi
 X-LIC-LOCATION:Africa/Nairobi
 BEGIN:STANDARD
-TZOFFSETFROM:+0245
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:19600101T000000
-RDATE:19600101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0230
-TZOFFSETTO:+0245
-TZNAME:BEAUT
-DTSTART:19400101T000000
-RDATE:19400101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0230
-TZNAME:BEAT
-DTSTART:19300101T000000
-RDATE:19300101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0227
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19280701T000000
-RDATE:19280701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Ndjamena.ics b/libical/zoneinfo/Africa/Ndjamena.ics
index b9501a9e55..7732657293 100644
--- a/libical/zoneinfo/Africa/Ndjamena.ics
+++ b/libical/zoneinfo/Africa/Ndjamena.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Ndjamena
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Ndjamena
 X-LIC-LOCATION:Africa/Ndjamena
 BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WAT
-DTSTART:19800308T000000
-RDATE:19800308T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WAST
-DTSTART:19791014T000000
-RDATE:19791014T000000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Niamey.ics b/libical/zoneinfo/Africa/Niamey.ics
index 5b72e6dc28..7c0347d4aa 100644
--- a/libical/zoneinfo/Africa/Niamey.ics
+++ b/libical/zoneinfo/Africa/Niamey.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Niamey
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Niamey
 X-LIC-LOCATION:Africa/Niamey
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19600101T000000
-RDATE:19600101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19340226T000000
-RDATE:19340226T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0008
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Nouakchott.ics b/libical/zoneinfo/Africa/Nouakchott.ics
index 4ccefb30a7..e5f77760d8 100644
--- a/libical/zoneinfo/Africa/Nouakchott.ics
+++ b/libical/zoneinfo/Africa/Nouakchott.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Nouakchott
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Nouakchott
 X-LIC-LOCATION:Africa/Nouakchott
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19601128T000000
-RDATE:19601128T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:WAT
-DTSTART:19340226T000000
-RDATE:19340226T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0104
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Ouagadougou.ics b/libical/zoneinfo/Africa/Ouagadougou.ics
index a7ee15ae1c..c66649bbfd 100644
--- a/libical/zoneinfo/Africa/Ouagadougou.ics
+++ b/libical/zoneinfo/Africa/Ouagadougou.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Ouagadougou
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Ouagadougou
 X-LIC-LOCATION:Africa/Ouagadougou
 BEGIN:STANDARD
-TZOFFSETFROM:-0006
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Porto-Novo.ics b/libical/zoneinfo/Africa/Porto-Novo.ics
index 61a791c8d5..995f0de0da 100644
--- a/libical/zoneinfo/Africa/Porto-Novo.ics
+++ b/libical/zoneinfo/Africa/Porto-Novo.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Porto-Novo
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Porto-Novo
 X-LIC-LOCATION:Africa/Porto-Novo
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0100
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19340226T000000
-RDATE:19340226T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0010
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Sao_Tome.ics b/libical/zoneinfo/Africa/Sao_Tome.ics
index 70289c5659..ffaade3cfe 100644
--- a/libical/zoneinfo/Africa/Sao_Tome.ics
+++ b/libical/zoneinfo/Africa/Sao_Tome.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Sao_Tome
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Sao_Tome
 X-LIC-LOCATION:Africa/Sao_Tome
 BEGIN:STANDARD
-TZOFFSETFROM:-0037
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0027
-TZOFFSETTO:-0037
-TZNAME:LMT
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Timbuktu.ics b/libical/zoneinfo/Africa/Timbuktu.ics
index 01d8193584..19ec6fba5e 100644
--- a/libical/zoneinfo/Africa/Timbuktu.ics
+++ b/libical/zoneinfo/Africa/Timbuktu.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Africa/Timbuktu
+TZID:/softwarestudio.org/Olson_20011030_4/Africa/Timbuktu
 X-LIC-LOCATION:Africa/Timbuktu
 BEGIN:STANDARD
-TZOFFSETFROM:-0012
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Tripoli.ics b/libical/zoneinfo/Africa/Tripoli.ics
index 0e35290135..c4905ca762 100644
--- a/libical/zoneinfo/Africa/Tripoli.ics
+++ b/libical/zoneinfo/Africa/Tripoli.ics
@@ -2,66 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Tripoli
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Tripoli
 X-LIC-LOCATION:Africa/Tripoli
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19971004T000000
-RDATE:19971004T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19970404T000000
-RDATE:19970404T000000
-RDATE:19890401T000000
-RDATE:19880401T000000
-RDATE:19870401T000000
-RDATE:19860404T000000
-RDATE:19850406T000000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19550930T000000
-RDATE:19531009T020000
-RDATE:19511014T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19960930T000000
-RDATE:19960930T000000
-RDATE:19891001T000000
-RDATE:19881001T000000
-RDATE:19871001T000000
-RDATE:19861003T000000
-RDATE:19851001T000000
-RDATE:19841001T000000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19820101T000000
-RDATE:19560101T000000
-RDATE:19540101T000000
-RDATE:19520101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19900504T000000
-RDATE:19900504T000000
-RDATE:19590101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0053
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Tunis.ics b/libical/zoneinfo/Africa/Tunis.ics
index 976d45f8b7..9e334d5c2a 100644
--- a/libical/zoneinfo/Africa/Tunis.ics
+++ b/libical/zoneinfo/Africa/Tunis.ics
@@ -2,57 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Tunis
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Tunis
 X-LIC-LOCATION:Africa/Tunis
 BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19900930T010000
-RDATE:19900930T010000
-RDATE:19890924T010000
-RDATE:19880925T010000
-RDATE:19781001T010000
-RDATE:19770924T010000
-RDATE:19450916T000000
-RDATE:19441008T000000
-RDATE:19431004T020000
-RDATE:19430417T020000
-RDATE:19421102T030000
-RDATE:19411006T000000
-RDATE:19391119T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19900501T000000
-RDATE:19900501T000000
-RDATE:19890326T000000
-RDATE:19880601T000000
-RDATE:19780501T000000
-RDATE:19770430T000000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430425T020000
-RDATE:19430329T020000
-RDATE:19420309T000000
-RDATE:19400225T230000
-RDATE:19390415T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0009
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19110311T000000
-RDATE:19110311T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0041
-TZOFFSETTO:+0009
-TZNAME:PMT
-DTSTART:18810512T000000
-RDATE:18810512T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Africa/Windhoek.ics b/libical/zoneinfo/Africa/Windhoek.ics
index 987a1a19fe..79cb5bbcca 100644
--- a/libical/zoneinfo/Africa/Windhoek.ics
+++ b/libical/zoneinfo/Africa/Windhoek.ics
@@ -2,63 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Africa/Windhoek
+TZID:/softwarestudio.org/Olson_20011030_5/Africa/Windhoek
 X-LIC-LOCATION:Africa/Windhoek
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:WAST
-DTSTART:19940904T020000
+DTSTART:19700906T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:WAT
-DTSTART:19950402T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WAT
-DTSTART:19940403T000000
-RDATE:19940403T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CAT
-DTSTART:19900321T000000
-RDATE:19900321T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:SAST
-DTSTART:19430321T020000
-RDATE:19430321T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:SAST
-DTSTART:19420920T020000
-RDATE:19420920T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0130
-TZOFFSETTO:+0200
-TZNAME:SAST
-DTSTART:19030301T000000
-RDATE:19030301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0108
-TZOFFSETTO:+0130
-TZNAME:SWAT
-DTSTART:18920208T000000
-RDATE:18920208T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Adak.ics b/libical/zoneinfo/America/Adak.ics
index 7e9652438a..8cd319a72e 100644
--- a/libical/zoneinfo/America/Adak.ics
+++ b/libical/zoneinfo/America/Adak.ics
@@ -2,129 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Adak
+TZID:/softwarestudio.org/Olson_20011030_5/America/Adak
 X-LIC-LOCATION:America/Adak
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
 TZOFFSETTO:-1000
 TZNAME:HAST
-DTSTART:19841028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-1000
 TZOFFSETTO:-0900
 TZNAME:HADT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:HADT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:HAST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:BDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19821031T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19670401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:NPT
-DTSTART:19450814T130000
-RDATE:19450814T130000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:NWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1147
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19000820T120000
-RDATE:19000820T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1213
-TZOFFSETTO:-1147
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Anchorage.ics b/libical/zoneinfo/America/Anchorage.ics
index b48895984b..8055b67c19 100644
--- a/libical/zoneinfo/America/Anchorage.ics
+++ b/libical/zoneinfo/America/Anchorage.ics
@@ -2,123 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Anchorage
+TZID:/softwarestudio.org/Olson_20011030_5/America/Anchorage
 X-LIC-LOCATION:America/Anchorage
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:AKST
-DTSTART:19841028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0800
 TZNAME:AKDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:AHDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-1000
-TZNAME:AHST
-DTSTART:19821031T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:AHST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19670401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:CAT
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19000820T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-1000
-TZNAME:CAT
-DTSTART:19450930T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:CAWT
-DTSTART:19450814T140000
-RDATE:19450814T140000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:CAWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1400
-TZOFFSETTO:-1000
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Anguilla.ics b/libical/zoneinfo/America/Anguilla.ics
index 263279e378..9c9bb0a3e8 100644
--- a/libical/zoneinfo/America/Anguilla.ics
+++ b/libical/zoneinfo/America/Anguilla.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Anguilla
+TZID:/softwarestudio.org/Olson_20011030_4/America/Anguilla
 X-LIC-LOCATION:America/Anguilla
 BEGIN:STANDARD
-TZOFFSETFROM:-0412
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19120302T000000
-RDATE:19120302T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Antigua.ics b/libical/zoneinfo/America/Antigua.ics
index 418684de9d..2d341cb9b9 100644
--- a/libical/zoneinfo/America/Antigua.ics
+++ b/libical/zoneinfo/America/Antigua.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Antigua
+TZID:/softwarestudio.org/Olson_20011030_5/America/Antigua
 X-LIC-LOCATION:America/Antigua
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19510101T000000
-RDATE:19510101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0407
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19120302T000000
-RDATE:19120302T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Araguaina.ics b/libical/zoneinfo/America/Araguaina.ics
index 3b65bf9912..729eeb9afc 100644
--- a/libical/zoneinfo/America/Araguaina.ics
+++ b/libical/zoneinfo/America/Araguaina.ics
@@ -2,90 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Araguaina
+TZID:/softwarestudio.org/Olson_20011030_5/America/Araguaina
 X-LIC-LOCATION:America/Araguaina
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:20010218T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20000227T000000
-RDATE:20000227T000000
-RDATE:19990221T000000
-RDATE:19980301T000000
-RDATE:19970216T000000
-RDATE:19960211T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19981011T000000
-RDATE:19971006T000000
-RDATE:19961006T000000
-RDATE:19951015T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19950914T000000
-RDATE:19950914T000000
-RDATE:19900917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0313
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Aruba.ics b/libical/zoneinfo/America/Aruba.ics
index 65d5ef19f5..d21f73ed53 100644
--- a/libical/zoneinfo/America/Aruba.ics
+++ b/libical/zoneinfo/America/Aruba.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Aruba
+TZID:/softwarestudio.org/Olson_20011030_5/America/Aruba
 X-LIC-LOCATION:America/Aruba
 BEGIN:STANDARD
-TZOFFSETFROM:-0430
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19650101T000000
-RDATE:19650101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0440
-TZOFFSETTO:-0430
-TZNAME:ANT
-DTSTART:19120212T000000
-RDATE:19120212T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Asuncion.ics b/libical/zoneinfo/America/Asuncion.ics
index 486e7de9cb..c020222ae2 100644
--- a/libical/zoneinfo/America/Asuncion.ics
+++ b/libical/zoneinfo/America/Asuncion.ics
@@ -2,105 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Asuncion
+TZID:/softwarestudio.org/Olson_20011030_5/America/Asuncion
 X-LIC-LOCATION:America/Asuncion
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:PYST
-DTSTART:19961006T000000
+DTSTART:19701004T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:PYT
-DTSTART:19980301T000000
+DTSTART:19700301T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:PYT
-DTSTART:19970223T000000
-RDATE:19970223T000000
-RDATE:19960301T000000
-RDATE:19950226T000000
-RDATE:19940227T000000
-RDATE:19930331T000000
-RDATE:19920301T000000
-RDATE:19910401T000000
-RDATE:19900401T000000
-RDATE:19890401T000000
-RDATE:19880401T000000
-RDATE:19870401T000000
-RDATE:19860401T000000
-RDATE:19850401T000000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-RDATE:19800401T000000
-RDATE:19790401T000000
-RDATE:19780301T000000
-RDATE:19770301T000000
-RDATE:19760301T000000
-RDATE:19740401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:PYST
-DTSTART:19951001T000000
-RDATE:19951001T000000
-RDATE:19941001T000000
-RDATE:19931001T000000
-RDATE:19921005T000000
-RDATE:19911006T000000
-RDATE:19901001T000000
-RDATE:19891022T000000
-RDATE:19881001T000000
-RDATE:19871001T000000
-RDATE:19861001T000000
-RDATE:19851001T000000
-RDATE:19841001T000000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-RDATE:19801001T000000
-RDATE:19791001T000000
-RDATE:19781001T000000
-RDATE:19771001T000000
-RDATE:19761001T000000
-RDATE:19751001T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:PYT
-DTSTART:19750301T000000
-RDATE:19750301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:PYT
-DTSTART:19721001T000000
-RDATE:19721001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0351
-TZOFFSETTO:-0400
-TZNAME:PYT
-DTSTART:19311010T000000
-RDATE:19311010T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0351
-TZOFFSETTO:-0351
-TZNAME:AMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Barbados.ics b/libical/zoneinfo/America/Barbados.ics
index 94e20868a7..3d10e0067f 100644
--- a/libical/zoneinfo/America/Barbados.ics
+++ b/libical/zoneinfo/America/Barbados.ics
@@ -2,41 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Barbados
+TZID:/softwarestudio.org/Olson_20011030_5/America/Barbados
 X-LIC-LOCATION:America/Barbados
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19800925T020000
-RDATE:19800925T020000
-RDATE:19790930T020000
-RDATE:19781001T020000
-RDATE:19771002T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19800420T020000
-RDATE:19800420T020000
-RDATE:19790415T020000
-RDATE:19780416T020000
-RDATE:19770612T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0358
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19320101T000000
-RDATE:19320101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0358
-TZOFFSETTO:-0358
-TZNAME:BMT
-DTSTART:19240101T000000
-RDATE:19240101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Belem.ics b/libical/zoneinfo/America/Belem.ics
index d8402a2b94..1a9a260e3b 100644
--- a/libical/zoneinfo/America/Belem.ics
+++ b/libical/zoneinfo/America/Belem.ics
@@ -2,61 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Belem
+TZID:/softwarestudio.org/Olson_20011030_5/America/Belem
 X-LIC-LOCATION:America/Belem
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:19880912T000000
-RDATE:19880912T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19880207T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19871025T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0314
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Belize.ics b/libical/zoneinfo/America/Belize.ics
index d18b445d9a..7e050f23a1 100644
--- a/libical/zoneinfo/America/Belize.ics
+++ b/libical/zoneinfo/America/Belize.ics
@@ -2,92 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Belize
+TZID:/softwarestudio.org/Olson_20011030_5/America/Belize
 X-LIC-LOCATION:America/Belize
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19830212T000000
-RDATE:19830212T000000
-RDATE:19740209T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19821218T000000
-RDATE:19821218T000000
-RDATE:19731205T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0530
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19430214T000000
-RDATE:19430214T000000
-RDATE:19420215T000000
-RDATE:19410209T000000
-RDATE:19400211T000000
-RDATE:19390212T000000
-RDATE:19380213T000000
-RDATE:19370214T000000
-RDATE:19360209T000000
-RDATE:19350210T000000
-RDATE:19340211T000000
-RDATE:19330212T000000
-RDATE:19320214T000000
-RDATE:19310215T000000
-RDATE:19300209T000000
-RDATE:19290210T000000
-RDATE:19280212T000000
-RDATE:19270213T000000
-RDATE:19260214T000000
-RDATE:19250215T000000
-RDATE:19240210T000000
-RDATE:19230211T000000
-RDATE:19220212T000000
-RDATE:19210213T000000
-RDATE:19200215T000000
-RDATE:19190209T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0530
-TZNAME:CHDT
-DTSTART:19421004T000000
-RDATE:19421004T000000
-RDATE:19411005T000000
-RDATE:19401006T000000
-RDATE:19391008T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19331008T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19301005T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19251004T000000
-RDATE:19241005T000000
-RDATE:19231007T000000
-RDATE:19221008T000000
-RDATE:19211002T000000
-RDATE:19201003T000000
-RDATE:19191005T000000
-RDATE:19181006T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0553
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19120401T000000
-RDATE:19120401T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Boa_Vista.ics b/libical/zoneinfo/America/Boa_Vista.ics
index e4c3fadd95..e2c7db092c 100644
--- a/libical/zoneinfo/America/Boa_Vista.ics
+++ b/libical/zoneinfo/America/Boa_Vista.ics
@@ -2,66 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Boa_Vista
+TZID:/softwarestudio.org/Olson_20011030_5/America/Boa_Vista
 X-LIC-LOCATION:America/Boa_Vista
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:20001015T000000
-RDATE:20001015T000000
-RDATE:20000227T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:20001008T000000
-RDATE:20001008T000000
-RDATE:19991003T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19990930T000000
-RDATE:19990930T000000
-RDATE:19880912T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0403
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Bogota.ics b/libical/zoneinfo/America/Bogota.ics
index 88d06f832d..3881498298 100644
--- a/libical/zoneinfo/America/Bogota.ics
+++ b/libical/zoneinfo/America/Bogota.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Bogota
+TZID:/softwarestudio.org/Olson_20011030_5/America/Bogota
 X-LIC-LOCATION:America/Bogota
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:COT
-DTSTART:19921231T000000
-RDATE:19921231T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:COST
-DTSTART:19920502T000000
-RDATE:19920502T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0456
 TZOFFSETTO:-0500
 TZNAME:COT
-DTSTART:19141123T000000
-RDATE:19141123T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0456
-TZOFFSETTO:-0456
-TZNAME:BMT
-DTSTART:18840313T000000
-RDATE:18840313T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Boise.ics b/libical/zoneinfo/America/Boise.ics
index 437101c40e..95bf6b777f 100644
--- a/libical/zoneinfo/America/Boise.ics
+++ b/libical/zoneinfo/America/Boise.ics
@@ -2,105 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Boise
+TZID:/softwarestudio.org/Olson_20011030_5/America/Boise
 X-LIC-LOCATION:America/Boise
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19671029T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740203T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19740101T000000
-RDATE:19740101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MPT
-DTSTART:19450814T170000
-RDATE:19450814T170000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19230513T020000
-RDATE:19230513T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19191026T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19190330T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0745
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Buenos_Aires.ics b/libical/zoneinfo/America/Buenos_Aires.ics
index 438297b967..1d47dc9100 100644
--- a/libical/zoneinfo/America/Buenos_Aires.ics
+++ b/libical/zoneinfo/America/Buenos_Aires.ics
@@ -2,130 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Buenos_Aires
+TZID:/softwarestudio.org/Olson_20011030_5/America/Buenos_Aires
 X-LIC-LOCATION:America/Buenos_Aires
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19930307T000000
-RDATE:19930307T000000
-RDATE:19920301T000000
-RDATE:19910303T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19921018T000000
-RDATE:19921018T000000
-RDATE:19911020T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0354
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cambridge_Bay.ics b/libical/zoneinfo/America/Cambridge_Bay.ics
index 52fab73ecc..b1260aaeb8 100644
--- a/libical/zoneinfo/America/Cambridge_Bay.ics
+++ b/libical/zoneinfo/America/Cambridge_Bay.ics
@@ -2,140 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cambridge_Bay
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cambridge_Bay
 X-LIC-LOCATION:America/Cambridge_Bay
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:20020407T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:20010401T020000
-RDATE:20010401T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20001105T000000
-RDATE:20001105T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19990404T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19950402T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19981025T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0500
-TZNAME:MDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cancun.ics b/libical/zoneinfo/America/Cancun.ics
index 733b59af96..6d4ecefb03 100644
--- a/libical/zoneinfo/America/Cancun.ics
+++ b/libical/zoneinfo/America/Cancun.ics
@@ -2,76 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cancun
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cancun
 X-LIC-LOCATION:America/Cancun
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:20010506T020000
+DTSTART:19700503T020000
 RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:20010930T020000
+DTSTART:19700927T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19980802T020000
-RDATE:19980802T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19980405T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19971026T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19811223T000000
-RDATE:19811223T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0547
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19220101T001256
-RDATE:19220101T001256
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Caracas.ics b/libical/zoneinfo/America/Caracas.ics
index b478af8af3..17b94d65eb 100644
--- a/libical/zoneinfo/America/Caracas.ics
+++ b/libical/zoneinfo/America/Caracas.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Caracas
+TZID:/softwarestudio.org/Olson_20011030_5/America/Caracas
 X-LIC-LOCATION:America/Caracas
 BEGIN:STANDARD
-TZOFFSETFROM:-0430
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:VET
-DTSTART:19650101T000000
-RDATE:19650101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0428
-TZOFFSETTO:-0430
-TZNAME:VET
-DTSTART:19120212T000000
-RDATE:19120212T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0428
-TZOFFSETTO:-0428
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Catamarca.ics b/libical/zoneinfo/America/Catamarca.ics
index 1069f6c605..565b24483f 100644
--- a/libical/zoneinfo/America/Catamarca.ics
+++ b/libical/zoneinfo/America/Catamarca.ics
@@ -2,129 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Catamarca
+TZID:/softwarestudio.org/Olson_20011030_5/America/Catamarca
 X-LIC-LOCATION:America/Catamarca
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-RDATE:19920701T000000
-RDATE:19910701T000000
-RDATE:19900701T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19920301T000000
-RDATE:19920301T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19911020T000000
-RDATE:19911020T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0423
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cayenne.ics b/libical/zoneinfo/America/Cayenne.ics
index 26f9dfa33a..2d282240e7 100644
--- a/libical/zoneinfo/America/Cayenne.ics
+++ b/libical/zoneinfo/America/Cayenne.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cayenne
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cayenne
 X-LIC-LOCATION:America/Cayenne
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:GFT
-DTSTART:19671001T000000
-RDATE:19671001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0329
-TZOFFSETTO:-0400
-TZNAME:GFT
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cayman.ics b/libical/zoneinfo/America/Cayman.ics
index b29274995a..33599214dd 100644
--- a/libical/zoneinfo/America/Cayman.ics
+++ b/libical/zoneinfo/America/Cayman.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cayman
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cayman
 X-LIC-LOCATION:America/Cayman
 BEGIN:STANDARD
-TZOFFSETFROM:-0507
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19120201T000000
-RDATE:19120201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0526
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Chicago.ics b/libical/zoneinfo/America/Chicago.ics
index b7b920f37d..37cf55020a 100644
--- a/libical/zoneinfo/America/Chicago.ics
+++ b/libical/zoneinfo/America/Chicago.ics
@@ -2,169 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Chicago
+TZID:/softwarestudio.org/Olson_20011030_5/America/Chicago
 X-LIC-LOCATION:America/Chicago
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19551030T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19410427T020000
-RDATE:19400428T020000
-RDATE:19390430T020000
-RDATE:19380424T020000
-RDATE:19370425T020000
-RDATE:19350428T020000
-RDATE:19340429T020000
-RDATE:19330430T020000
-RDATE:19320424T020000
-RDATE:19310426T020000
-RDATE:19300427T020000
-RDATE:19290428T020000
-RDATE:19280429T020000
-RDATE:19270424T020000
-RDATE:19260425T020000
-RDATE:19250426T020000
-RDATE:19240427T020000
-RDATE:19230429T020000
-RDATE:19220430T020000
-RDATE:19210327T020000
-RDATE:19200613T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19540926T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19400929T020000
-RDATE:19390924T020000
-RDATE:19380925T020000
-RDATE:19370926T020000
-RDATE:19361115T020000
-RDATE:19350929T020000
-RDATE:19340930T020000
-RDATE:19330924T020000
-RDATE:19320925T020000
-RDATE:19310927T020000
-RDATE:19300928T020000
-RDATE:19290929T020000
-RDATE:19280930T020000
-RDATE:19270925T020000
-RDATE:19260926T020000
-RDATE:19250927T020000
-RDATE:19240928T020000
-RDATE:19230930T020000
-RDATE:19220924T020000
-RDATE:19211030T020000
-RDATE:19201031T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19360301T020000
-RDATE:19360301T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0551
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Chihuahua.ics b/libical/zoneinfo/America/Chihuahua.ics
index df51c747ec..63a0d1e6f2 100644
--- a/libical/zoneinfo/America/Chihuahua.ics
+++ b/libical/zoneinfo/America/Chihuahua.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Chihuahua
+TZID:/softwarestudio.org/Olson_20011030_5/America/Chihuahua
 X-LIC-LOCATION:America/Chihuahua
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:20010506T020000
+DTSTART:19700503T020000
 RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:20010930T020000
+DTSTART:19700927T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19311001T000000
-RDATE:19301115T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19980405T020000
-RDATE:19980405T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19980101T000000
-RDATE:19980101T000000
-RDATE:19960101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19971026T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19970406T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19310501T230000
-RDATE:19270610T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0704
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19211231T235540
-RDATE:19211231T235540
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cordoba.ics b/libical/zoneinfo/America/Cordoba.ics
index a3b1bd4bcf..21e1a73e46 100644
--- a/libical/zoneinfo/America/Cordoba.ics
+++ b/libical/zoneinfo/America/Cordoba.ics
@@ -2,125 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cordoba
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cordoba
 X-LIC-LOCATION:America/Cordoba
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-RDATE:19900701T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19900304T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19891015T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Costa_Rica.ics b/libical/zoneinfo/America/Costa_Rica.ics
index 38369460ec..0478f976b3 100644
--- a/libical/zoneinfo/America/Costa_Rica.ics
+++ b/libical/zoneinfo/America/Costa_Rica.ics
@@ -2,41 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Costa_Rica
+TZID:/softwarestudio.org/Olson_20011030_5/America/Costa_Rica
 X-LIC-LOCATION:America/Costa_Rica
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19920315T000000
-RDATE:19920315T000000
-RDATE:19910701T000000
-RDATE:19800601T000000
-RDATE:19790603T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19920118T000000
-RDATE:19920118T000000
-RDATE:19910119T000000
-RDATE:19800224T000000
-RDATE:19790225T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0536
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210115T000000
-RDATE:19210115T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0536
-TZOFFSETTO:-0536
-TZNAME:SJMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Cuiaba.ics b/libical/zoneinfo/America/Cuiaba.ics
index c306615f7b..4818c217b5 100644
--- a/libical/zoneinfo/America/Cuiaba.ics
+++ b/libical/zoneinfo/America/Cuiaba.ics
@@ -2,92 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Cuiaba
+TZID:/softwarestudio.org/Olson_20011030_5/America/Cuiaba
 X-LIC-LOCATION:America/Cuiaba
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:AMST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:20010218T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:20000227T000000
-RDATE:20000227T000000
-RDATE:19990221T000000
-RDATE:19980301T000000
-RDATE:19970216T000000
-RDATE:19960211T000000
-RDATE:19950219T000000
-RDATE:19940220T000000
-RDATE:19930131T000000
-RDATE:19920209T000000
-RDATE:19910217T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19981011T000000
-RDATE:19971006T000000
-RDATE:19961006T000000
-RDATE:19951015T000000
-RDATE:19941016T000000
-RDATE:19931017T000000
-RDATE:19921025T000000
-RDATE:19911020T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0344
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Curacao.ics b/libical/zoneinfo/America/Curacao.ics
index f21577fa4a..d336bfee4f 100644
--- a/libical/zoneinfo/America/Curacao.ics
+++ b/libical/zoneinfo/America/Curacao.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Curacao
+TZID:/softwarestudio.org/Olson_20011030_5/America/Curacao
 X-LIC-LOCATION:America/Curacao
 BEGIN:STANDARD
-TZOFFSETFROM:-0430
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19650101T000000
-RDATE:19650101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0436
-TZOFFSETTO:-0430
-TZNAME:ANT
-DTSTART:19120212T000000
-RDATE:19120212T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Danmarkshavn.ics b/libical/zoneinfo/America/Danmarkshavn.ics
index 03e6c4e0bb..4c6ec309d7 100644
--- a/libical/zoneinfo/America/Danmarkshavn.ics
+++ b/libical/zoneinfo/America/Danmarkshavn.ics
@@ -2,65 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_1/America/Danmarkshavn
+TZID:/softwarestudio.org/Olson_20011030_2/America/Danmarkshavn
 X-LIC-LOCATION:America/Danmarkshavn
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19960101T000000
-RDATE:19960101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:WGT
-DTSTART:19950923T230000
-RDATE:19950923T230000
-RDATE:19940924T230000
-RDATE:19930925T230000
-RDATE:19920926T230000
-RDATE:19910928T230000
-RDATE:19900929T230000
-RDATE:19890923T230000
-RDATE:19880924T230000
-RDATE:19870926T230000
-RDATE:19860927T230000
-RDATE:19850928T230000
-RDATE:19840929T230000
-RDATE:19830924T230000
-RDATE:19820925T230000
-RDATE:19810926T230000
-RDATE:19800927T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:WGST
-DTSTART:19950325T220000
-RDATE:19950325T220000
-RDATE:19940326T220000
-RDATE:19930327T220000
-RDATE:19920328T220000
-RDATE:19910330T220000
-RDATE:19900324T220000
-RDATE:19890325T220000
-RDATE:19880326T220000
-RDATE:19870328T220000
-RDATE:19860329T220000
-RDATE:19850330T220000
-RDATE:19840324T220000
-RDATE:19830326T220000
-RDATE:19820327T220000
-RDATE:19810328T220000
-RDATE:19800406T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0115
-TZOFFSETTO:-0300
-TZNAME:WGT
-DTSTART:19160728T000000
-RDATE:19160728T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Dawson.ics b/libical/zoneinfo/America/Dawson.ics
index 04de650c78..5836ed421b 100644
--- a/libical/zoneinfo/America/Dawson.ics
+++ b/libical/zoneinfo/America/Dawson.ics
@@ -2,86 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Dawson
+TZID:/softwarestudio.org/Olson_20011030_5/America/Dawson
 X-LIC-LOCATION:America/Dawson
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19801026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19731028T000000
-RDATE:19731028T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0700
-TZNAME:YDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19190525T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0918
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19000820T000000
-RDATE:19000820T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Dawson_Creek.ics b/libical/zoneinfo/America/Dawson_Creek.ics
index 00ca05715f..b302206b44 100644
--- a/libical/zoneinfo/America/Dawson_Creek.ics
+++ b/libical/zoneinfo/America/Dawson_Creek.ics
@@ -2,101 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Dawson_Creek
+TZID:/softwarestudio.org/Olson_20011030_5/America/Dawson_Creek
 X-LIC-LOCATION:America/Dawson_Creek
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19720830T020000
-RDATE:19720830T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19720430T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19711031T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19661030T020000
-RDATE:19651031T020000
-RDATE:19641025T020000
-RDATE:19631027T020000
-RDATE:19621028T020000
-RDATE:19610924T020000
-RDATE:19600925T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19470101T000000
-RDATE:19470101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0801
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Denver.ics b/libical/zoneinfo/America/Denver.ics
index 75b4ad33ec..2687e62c72 100644
--- a/libical/zoneinfo/America/Denver.ics
+++ b/libical/zoneinfo/America/Denver.ics
@@ -2,89 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Denver
+TZID:/softwarestudio.org/Olson_20011030_5/America/Denver
 X-LIC-LOCATION:America/Denver
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19651031T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19210327T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-RDATE:18831118T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19210522T020000
-RDATE:19201031T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MPT
-DTSTART:19450814T170000
-RDATE:19450814T170000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Detroit.ics b/libical/zoneinfo/America/Detroit.ics
index 545c7b8190..196fa31f15 100644
--- a/libical/zoneinfo/America/Detroit.ics
+++ b/libical/zoneinfo/America/Detroit.ics
@@ -2,90 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Detroit
+TZID:/softwarestudio.org/Olson_20011030_5/America/Detroit
 X-LIC-LOCATION:America/Detroit
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19731028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19670614T020000
-RDATE:19480425T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19750101T000000
-RDATE:19750101T000000
-RDATE:19730101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19671029T020000
-RDATE:19671029T020000
-RDATE:19480926T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:EPT
-DTSTART:19450814T190000
-RDATE:19450814T190000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19150515T020000
-RDATE:19150515T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0532
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19050101T000000
-RDATE:19050101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Dominica.ics b/libical/zoneinfo/America/Dominica.ics
index fcf6513ae4..127f1e8dca 100644
--- a/libical/zoneinfo/America/Dominica.ics
+++ b/libical/zoneinfo/America/Dominica.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Dominica
+TZID:/softwarestudio.org/Olson_20011030_4/America/Dominica
 X-LIC-LOCATION:America/Dominica
 BEGIN:STANDARD
-TZOFFSETFROM:-0406
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110701T000100
-RDATE:19110701T000100
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Edmonton.ics b/libical/zoneinfo/America/Edmonton.ics
index a9c57f0b25..e1e2f02918 100644
--- a/libical/zoneinfo/America/Edmonton.ics
+++ b/libical/zoneinfo/America/Edmonton.ics
@@ -2,81 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Edmonton
+TZID:/softwarestudio.org/Olson_20011030_5/America/Edmonton
 X-LIC-LOCATION:America/Edmonton
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19721029T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19690427T020000
-RDATE:19670430T020000
-RDATE:19470427T020000
-RDATE:19230429T020000
-RDATE:19220430T020000
-RDATE:19210424T020000
-RDATE:19200425T020000
-RDATE:19190413T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19691026T020000
-RDATE:19691026T020000
-RDATE:19671029T020000
-RDATE:19470928T020000
-RDATE:19450930T020000
-RDATE:19230930T020000
-RDATE:19220924T020000
-RDATE:19210925T020000
-RDATE:19201031T020000
-RDATE:19190527T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0734
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19060901T000000
-RDATE:19060901T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Eirunepe.ics b/libical/zoneinfo/America/Eirunepe.ics
index db1b722425..bd4daaf496 100644
--- a/libical/zoneinfo/America/Eirunepe.ics
+++ b/libical/zoneinfo/America/Eirunepe.ics
@@ -2,65 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Eirunepe
+TZID:/softwarestudio.org/Olson_20011030_5/America/Eirunepe
 X-LIC-LOCATION:America/Eirunepe
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19940922T000000
-RDATE:19940922T000000
-RDATE:19930928T000000
-RDATE:19880912T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:ACT
-DTSTART:19940220T000000
-RDATE:19940220T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:ACST
-DTSTART:19931017T000000
-RDATE:19931017T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0439
-TZOFFSETTO:-0500
-TZNAME:ACT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/El_Salvador.ics b/libical/zoneinfo/America/El_Salvador.ics
index 27b1415f65..816d83c675 100644
--- a/libical/zoneinfo/America/El_Salvador.ics
+++ b/libical/zoneinfo/America/El_Salvador.ics
@@ -2,30 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/El_Salvador
+TZID:/softwarestudio.org/Olson_20011030_5/America/El_Salvador
 X-LIC-LOCATION:America/El_Salvador
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19880925T000000
-RDATE:19880925T000000
-RDATE:19870927T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19880501T000000
-RDATE:19880501T000000
-RDATE:19870503T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0557
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210101T000000
-RDATE:19210101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Fortaleza.ics b/libical/zoneinfo/America/Fortaleza.ics
index 5cfcd796f0..5a243bb7b6 100644
--- a/libical/zoneinfo/America/Fortaleza.ics
+++ b/libical/zoneinfo/America/Fortaleza.ics
@@ -2,84 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Fortaleza
+TZID:/softwarestudio.org/Olson_20011030_5/America/Fortaleza
 X-LIC-LOCATION:America/Fortaleza
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:20020217T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20010913T000000
-RDATE:20010913T000000
-RDATE:19990930T000000
-RDATE:19900917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20001022T000000
-RDATE:20001022T000000
-RDATE:20000227T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0234
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Glace_Bay.ics b/libical/zoneinfo/America/Glace_Bay.ics
index 868764f729..771b6328dc 100644
--- a/libical/zoneinfo/America/Glace_Bay.ics
+++ b/libical/zoneinfo/America/Glace_Bay.ics
@@ -2,70 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Glace_Bay
+TZID:/softwarestudio.org/Olson_20011030_5/America/Glace_Bay
 X-LIC-LOCATION:America/Glace_Bay
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19721029T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19530426T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19720101T000000
-RDATE:19720101T000000
-RDATE:19540101T000000
-RDATE:19530101T000000
-RDATE:19020615T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19530927T020000
-RDATE:19530927T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Godthab.ics b/libical/zoneinfo/America/Godthab.ics
index 005fb19a76..983765bd0f 100644
--- a/libical/zoneinfo/America/Godthab.ics
+++ b/libical/zoneinfo/America/Godthab.ics
@@ -2,57 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Godthab
+TZID:/softwarestudio.org/Olson_20011030_5/America/Godthab
 X-LIC-LOCATION:America/Godthab
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:WGST
-DTSTART:19810328T220000
+DTSTART:19700328T220000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SA
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:WGT
-DTSTART:19961026T230000
+DTSTART:19701024T230000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SA
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:WGT
-DTSTART:19950923T230000
-RDATE:19950923T230000
-RDATE:19940924T230000
-RDATE:19930925T230000
-RDATE:19920926T230000
-RDATE:19910928T230000
-RDATE:19900929T230000
-RDATE:19890923T230000
-RDATE:19880924T230000
-RDATE:19870926T230000
-RDATE:19860927T230000
-RDATE:19850928T230000
-RDATE:19840929T230000
-RDATE:19830924T230000
-RDATE:19820925T230000
-RDATE:19810926T230000
-RDATE:19800927T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:WGST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0327
-TZOFFSETTO:-0300
-TZNAME:WGT
-DTSTART:19160728T000000
-RDATE:19160728T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Goose_Bay.ics b/libical/zoneinfo/America/Goose_Bay.ics
index cd45753f93..f2bda05eea 100644
--- a/libical/zoneinfo/America/Goose_Bay.ics
+++ b/libical/zoneinfo/America/Goose_Bay.ics
@@ -2,220 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Goose_Bay
+TZID:/softwarestudio.org/Olson_20011030_5/America/Goose_Bay
 X-LIC-LOCATION:America/Goose_Bay
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19890402T000100
+DTSTART:19700405T000100
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19891029T000100
+DTSTART:19701025T000100
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19881030T000100
-RDATE:19881030T000100
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0200
-TZNAME:ADDT
-DTSTART:19880403T000100
-RDATE:19880403T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19871025T000100
-RDATE:19871025T000100
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19661030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19870405T000100
-RDATE:19870405T000100
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19660315T020000
-RDATE:19660315T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-RDATE:19641025T020000
-RDATE:19631027T020000
-RDATE:19621028T020000
-RDATE:19611029T020000
-RDATE:19601030T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19501008T020000
-RDATE:19491002T020000
-RDATE:19481003T020000
-RDATE:19471005T020000
-RDATE:19461006T020000
-RDATE:19451007T020000
-RDATE:19440902T000000
-RDATE:19430905T000000
-RDATE:19421231T000000
-RDATE:19411005T000000
-RDATE:19401006T000000
-RDATE:19391001T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0230
-TZNAME:NDT
-DTSTART:19650425T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500514T020000
-RDATE:19490508T020000
-RDATE:19480509T020000
-RDATE:19470511T020000
-RDATE:19460512T020000
-RDATE:19410511T000000
-RDATE:19400512T000000
-RDATE:19390514T000000
-RDATE:19380508T000000
-RDATE:19370509T000000
-RDATE:19360510T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0230
-TZNAME:NWT
-DTSTART:19450101T000000
-RDATE:19450101T000000
-RDATE:19440710T000000
-RDATE:19430530T000000
-RDATE:19420301T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19360101T000000
-RDATE:19360101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19350330T000000
-RDATE:19350330T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19190101T000000
-RDATE:19190101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0231
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19181031T020000
-RDATE:19181031T020000
-RDATE:19170917T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0231
-TZNAME:NST
-DTSTART:19180414T020000
-RDATE:19180414T020000
-RDATE:19170408T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0402
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Grand_Turk.ics b/libical/zoneinfo/America/Grand_Turk.ics
index fbc4f9ed8a..71d4360b54 100644
--- a/libical/zoneinfo/America/Grand_Turk.ics
+++ b/libical/zoneinfo/America/Grand_Turk.ics
@@ -2,49 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Grand_Turk
+TZID:/softwarestudio.org/Olson_20011030_5/America/Grand_Turk
 X-LIC-LOCATION:America/Grand_Turk
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19791028T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T000000
+DTSTART:19700405T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T000000
-RDATE:19860427T000000
-RDATE:19850428T000000
-RDATE:19840429T000000
-RDATE:19830424T000000
-RDATE:19820425T000000
-RDATE:19810426T000000
-RDATE:19800427T000000
-RDATE:19790429T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0507
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19120201T000000
-RDATE:19120201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0445
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Grenada.ics b/libical/zoneinfo/America/Grenada.ics
index 0f1f7599f4..3ceb58646a 100644
--- a/libical/zoneinfo/America/Grenada.ics
+++ b/libical/zoneinfo/America/Grenada.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Grenada
+TZID:/softwarestudio.org/Olson_20011030_4/America/Grenada
 X-LIC-LOCATION:America/Grenada
 BEGIN:STANDARD
-TZOFFSETFROM:-0407
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guadeloupe.ics b/libical/zoneinfo/America/Guadeloupe.ics
index 2eae62a47b..75736ec5a4 100644
--- a/libical/zoneinfo/America/Guadeloupe.ics
+++ b/libical/zoneinfo/America/Guadeloupe.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Guadeloupe
+TZID:/softwarestudio.org/Olson_20011030_4/America/Guadeloupe
 X-LIC-LOCATION:America/Guadeloupe
 BEGIN:STANDARD
-TZOFFSETFROM:-0406
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110608T000000
-RDATE:19110608T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guatemala.ics b/libical/zoneinfo/America/Guatemala.ics
index 318c17f562..d7a89d4bd8 100644
--- a/libical/zoneinfo/America/Guatemala.ics
+++ b/libical/zoneinfo/America/Guatemala.ics
@@ -2,32 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Guatemala
+TZID:/softwarestudio.org/Olson_20011030_5/America/Guatemala
 X-LIC-LOCATION:America/Guatemala
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19910907T000000
-RDATE:19910907T000000
-RDATE:19830922T000000
-RDATE:19740224T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19910323T000000
-RDATE:19910323T000000
-RDATE:19830521T000000
-RDATE:19731125T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0602
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19181005T000000
-RDATE:19181005T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guayaquil.ics b/libical/zoneinfo/America/Guayaquil.ics
index 13b84858f1..273e89c139 100644
--- a/libical/zoneinfo/America/Guayaquil.ics
+++ b/libical/zoneinfo/America/Guayaquil.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Guayaquil
+TZID:/softwarestudio.org/Olson_20011030_5/America/Guayaquil
 X-LIC-LOCATION:America/Guayaquil
 BEGIN:STANDARD
-TZOFFSETFROM:-0514
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:ECT
-DTSTART:19310101T000000
-RDATE:19310101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0519
-TZOFFSETTO:-0514
-TZNAME:QMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Guyana.ics b/libical/zoneinfo/America/Guyana.ics
index 012dfd96bd..e93ceb8eba 100644
--- a/libical/zoneinfo/America/Guyana.ics
+++ b/libical/zoneinfo/America/Guyana.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Guyana
+TZID:/softwarestudio.org/Olson_20011030_5/America/Guyana
 X-LIC-LOCATION:America/Guyana
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:GYT
-DTSTART:19910101T000000
-RDATE:19910101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0300
-TZNAME:GYT
-DTSTART:19750731T000000
-RDATE:19750731T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0345
-TZNAME:GYT
-DTSTART:19660526T000000
-RDATE:19660526T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0353
-TZOFFSETTO:-0345
-TZNAME:GBGT
-DTSTART:19150301T000000
-RDATE:19150301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Halifax.ics b/libical/zoneinfo/America/Halifax.ics
index 4c00833b66..e385a87dfe 100644
--- a/libical/zoneinfo/America/Halifax.ics
+++ b/libical/zoneinfo/America/Halifax.ics
@@ -2,154 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Halifax
+TZID:/softwarestudio.org/Olson_20011030_5/America/Halifax
 X-LIC-LOCATION:America/Halifax
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19621028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19410504T000000
-RDATE:19400505T000000
-RDATE:19390528T000000
-RDATE:19380501T000000
-RDATE:19370502T000000
-RDATE:19360601T000000
-RDATE:19350602T000000
-RDATE:19340520T000000
-RDATE:19330430T000000
-RDATE:19310510T000000
-RDATE:19300511T000000
-RDATE:19290512T000000
-RDATE:19280513T000000
-RDATE:19270501T000000
-RDATE:19260516T000000
-RDATE:19250503T000000
-RDATE:19240504T000000
-RDATE:19230506T000000
-RDATE:19220430T000000
-RDATE:19210506T000000
-RDATE:19200509T000000
-RDATE:19180414T020000
-RDATE:19160401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19590927T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19410929T000000
-RDATE:19400930T000000
-RDATE:19390925T000000
-RDATE:19380926T000000
-RDATE:19370927T000000
-RDATE:19360914T000000
-RDATE:19350930T000000
-RDATE:19340916T000000
-RDATE:19331002T000000
-RDATE:19310928T000000
-RDATE:19300915T000000
-RDATE:19290903T000000
-RDATE:19280909T000000
-RDATE:19270926T000000
-RDATE:19260913T000000
-RDATE:19250928T000000
-RDATE:19240915T000000
-RDATE:19230904T000000
-RDATE:19220905T000000
-RDATE:19210905T000000
-RDATE:19200829T000000
-RDATE:19181031T020000
-RDATE:19161001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19320926T000000
-RDATE:19320926T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0414
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19020615T000000
-RDATE:19020615T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Havana.ics b/libical/zoneinfo/America/Havana.ics
index 38307e62cd..ed1704d3fb 100644
--- a/libical/zoneinfo/America/Havana.ics
+++ b/libical/zoneinfo/America/Havana.ics
@@ -2,127 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Havana
+TZID:/softwarestudio.org/Olson_20011030_5/America/Havana
 X-LIC-LOCATION:America/Havana
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:CST
-DTSTART:19981025T010000
+DTSTART:19701025T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:CDT
-DTSTART:20000402T000000
+DTSTART:19700405T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:CDT
-DTSTART:19990328T000000
-RDATE:19990328T000000
-RDATE:19980329T000000
-RDATE:19970406T000000
-RDATE:19960407T000000
-RDATE:19950402T000000
-RDATE:19940403T000000
-RDATE:19930404T000000
-RDATE:19920405T000000
-RDATE:19910407T000000
-RDATE:19900401T000000
-RDATE:19890319T000000
-RDATE:19880320T000000
-RDATE:19870315T000000
-RDATE:19860316T000000
-RDATE:19850505T000000
-RDATE:19840506T000000
-RDATE:19830508T000000
-RDATE:19820509T000000
-RDATE:19810510T000000
-RDATE:19800316T000000
-RDATE:19790318T000000
-RDATE:19780507T000000
-RDATE:19770424T000000
-RDATE:19760425T000000
-RDATE:19750427T000000
-RDATE:19740428T000000
-RDATE:19730429T000000
-RDATE:19720430T000000
-RDATE:19710425T000000
-RDATE:19700426T000000
-RDATE:19690427T000000
-RDATE:19680414T000000
-RDATE:19670408T000000
-RDATE:19660529T000000
-RDATE:19650601T000000
-RDATE:19460602T000000
-RDATE:19450603T000000
-RDATE:19420607T000000
-RDATE:19410601T000000
-RDATE:19400602T000000
-RDATE:19280610T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:CST
-DTSTART:19971012T010000
-RDATE:19971012T010000
-RDATE:19961006T010000
-RDATE:19951008T010000
-RDATE:19941009T010000
-RDATE:19931010T010000
-RDATE:19921011T010000
-RDATE:19911013T010000
-RDATE:19901014T000000
-RDATE:19891008T000000
-RDATE:19881009T000000
-RDATE:19871011T000000
-RDATE:19861012T000000
-RDATE:19851013T000000
-RDATE:19841014T000000
-RDATE:19831009T000000
-RDATE:19821010T000000
-RDATE:19811011T000000
-RDATE:19801012T000000
-RDATE:19791014T000000
-RDATE:19781008T000000
-RDATE:19771030T000000
-RDATE:19761031T000000
-RDATE:19751026T000000
-RDATE:19741008T000000
-RDATE:19731008T000000
-RDATE:19721008T000000
-RDATE:19711031T000000
-RDATE:19701025T000000
-RDATE:19691026T000000
-RDATE:19680908T000000
-RDATE:19670910T000000
-RDATE:19661002T000000
-RDATE:19650930T000000
-RDATE:19460901T000000
-RDATE:19450902T000000
-RDATE:19420906T000000
-RDATE:19410907T000000
-RDATE:19400901T000000
-RDATE:19281010T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0530
-TZOFFSETTO:-0500
-TZNAME:CST
-DTSTART:19250719T120000
-RDATE:19250719T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0529
-TZOFFSETTO:-0530
-TZNAME:HMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Hermosillo.ics b/libical/zoneinfo/America/Hermosillo.ics
index a4797af09c..dd2d95dd4a 100644
--- a/libical/zoneinfo/America/Hermosillo.ics
+++ b/libical/zoneinfo/America/Hermosillo.ics
@@ -2,65 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Hermosillo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Hermosillo
 X-LIC-LOCATION:America/Hermosillo
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19990101T000000
-RDATE:19990101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19981025T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19420424T000000
-RDATE:19311001T000000
-RDATE:19301115T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19980405T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
 DTSTART:19700101T000000
-RDATE:19700101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19490114T000000
-RDATE:19490114T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19310501T230000
-RDATE:19270610T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0724
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19211231T233608
-RDATE:19211231T233608
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Indianapolis.ics b/libical/zoneinfo/America/Indiana/Indianapolis.ics
index 15450235b1..f51bf92d24 100644
--- a/libical/zoneinfo/America/Indiana/Indianapolis.ics
+++ b/libical/zoneinfo/America/Indiana/Indianapolis.ics
@@ -2,107 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Indianapolis
+TZID:/softwarestudio.org/Olson_20011030_5/America/Indiana/Indianapolis
 X-LIC-LOCATION:America/Indiana/Indianapolis
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-RDATE:19690101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19701025T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19700426T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19580427T020000
-RDATE:19580427T020000
-RDATE:19550424T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19570929T020000
-RDATE:19570929T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19540425T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19410622T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Knox.ics b/libical/zoneinfo/America/Indiana/Knox.ics
index a31bfdbefc..c1a2c54fb5 100644
--- a/libical/zoneinfo/America/Indiana/Knox.ics
+++ b/libical/zoneinfo/America/Indiana/Knox.ics
@@ -2,146 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Knox
+TZID:/softwarestudio.org/Olson_20011030_5/America/Indiana/Knox
 X-LIC-LOCATION:America/Indiana/Knox
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19911027T020000
-RDATE:19911027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19910407T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19901028T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19631027T020000
-RDATE:19611029T020000
-RDATE:19601030T020000
-RDATE:19591025T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19561028T020000
-RDATE:19551030T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19620429T020000
-RDATE:19620429T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19470101T000000
-RDATE:19470101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0546
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Marengo.ics b/libical/zoneinfo/America/Indiana/Marengo.ics
index 1642fd9887..fb56bb68bb 100644
--- a/libical/zoneinfo/America/Indiana/Marengo.ics
+++ b/libical/zoneinfo/America/Indiana/Marengo.ics
@@ -2,115 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Marengo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Indiana/Marengo
 X-LIC-LOCATION:America/Indiana/Marengo
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19760101T000000
-RDATE:19760101T000000
-RDATE:19741027T020000
-RDATE:19690101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19751026T020000
-RDATE:19751026T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19750223T020000
-RDATE:19750223T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19740106T020000
-RDATE:19740106T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19610430T020000
-RDATE:19610430T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19600925T020000
-RDATE:19600925T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19510930T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19600424T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19510429T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19510101T000000
-RDATE:19510101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indiana/Vevay.ics b/libical/zoneinfo/America/Indiana/Vevay.ics
index 92cd49b49c..eb9afbd5b1 100644
--- a/libical/zoneinfo/America/Indiana/Vevay.ics
+++ b/libical/zoneinfo/America/Indiana/Vevay.ics
@@ -2,80 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Indiana/Vevay
+TZID:/softwarestudio.org/Olson_20011030_5/America/Indiana/Vevay
 X-LIC-LOCATION:America/Indiana/Vevay
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19730101T000000
-RDATE:19730101T000000
-RDATE:19690101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19721029T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19720430T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19540425T020000
-RDATE:19540425T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19190330T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0540
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Indianapolis.ics b/libical/zoneinfo/America/Indianapolis.ics
index aefcc4846e..393ef71296 100644
--- a/libical/zoneinfo/America/Indianapolis.ics
+++ b/libical/zoneinfo/America/Indianapolis.ics
@@ -2,107 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Indianapolis
+TZID:/softwarestudio.org/Olson_20011030_5/America/Indianapolis
 X-LIC-LOCATION:America/Indianapolis
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-RDATE:19690101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19701025T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19700426T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19580427T020000
-RDATE:19580427T020000
-RDATE:19550424T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19570929T020000
-RDATE:19570929T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19540425T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19410622T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Inuvik.ics b/libical/zoneinfo/America/Inuvik.ics
index 667a93a05b..0b746a73b8 100644
--- a/libical/zoneinfo/America/Inuvik.ics
+++ b/libical/zoneinfo/America/Inuvik.ics
@@ -2,86 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Inuvik
+TZID:/softwarestudio.org/Olson_20011030_5/America/Inuvik
 X-LIC-LOCATION:America/Inuvik
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19801026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19790429T020000
-RDATE:19790429T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0600
-TZNAME:PDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19190525T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0854
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Iqaluit.ics b/libical/zoneinfo/America/Iqaluit.ics
index 241903ce93..a9a849709f 100644
--- a/libical/zoneinfo/America/Iqaluit.ics
+++ b/libical/zoneinfo/America/Iqaluit.ics
@@ -2,126 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Iqaluit
+TZID:/softwarestudio.org/Olson_20011030_5/America/Iqaluit
 X-LIC-LOCATION:America/Iqaluit
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:20010401T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19990404T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19950402T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19981025T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0300
-TZNAME:EDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0434
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Jamaica.ics b/libical/zoneinfo/America/Jamaica.ics
index 9b547e54d6..3b47dec08b 100644
--- a/libical/zoneinfo/America/Jamaica.ics
+++ b/libical/zoneinfo/America/Jamaica.ics
@@ -2,60 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Jamaica
+TZID:/softwarestudio.org/Olson_20011030_5/America/Jamaica
 X-LIC-LOCATION:America/Jamaica
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19840101T000000
-RDATE:19840101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0507
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19120201T000000
-RDATE:19120201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0507
-TZOFFSETTO:-0507
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Jujuy.ics b/libical/zoneinfo/America/Jujuy.ics
index 8ef643555f..ebfb931d2a 100644
--- a/libical/zoneinfo/America/Jujuy.ics
+++ b/libical/zoneinfo/America/Jujuy.ics
@@ -2,147 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Jujuy
+TZID:/softwarestudio.org/Olson_20011030_5/America/Jujuy
 X-LIC-LOCATION:America/Jujuy
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19921018T000000
-RDATE:19921018T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19920315T000000
-RDATE:19920315T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:WARST
-DTSTART:19911006T000000
-RDATE:19911006T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19910303T000000
-RDATE:19910303T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19901021T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19900304T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0421
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Juneau.ics b/libical/zoneinfo/America/Juneau.ics
index 00f944fad8..9e3c65153e 100644
--- a/libical/zoneinfo/America/Juneau.ics
+++ b/libical/zoneinfo/America/Juneau.ics
@@ -2,116 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Juneau
+TZID:/softwarestudio.org/Olson_20011030_5/America/Juneau
 X-LIC-LOCATION:America/Juneau
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:AKST
-DTSTART:19841028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0800
 TZNAME:AKDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19821031T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:PPT
-DTSTART:19450814T160000
-RDATE:19450814T160000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0858
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19000820T120000
-RDATE:19000820T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1502
-TZOFFSETTO:-0858
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Kentucky/Louisville.ics b/libical/zoneinfo/America/Kentucky/Louisville.ics
index c0c16bc8fe..ddf7aef939 100644
--- a/libical/zoneinfo/America/Kentucky/Louisville.ics
+++ b/libical/zoneinfo/America/Kentucky/Louisville.ics
@@ -2,152 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Kentucky/Louisville
+TZID:/softwarestudio.org/Olson_20011030_5/America/Kentucky/Louisville
 X-LIC-LOCATION:America/Kentucky/Louisville
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19751026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19741027T020000
-RDATE:19741027T020000
-RDATE:19680101T000000
-RDATE:19610723T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19740106T020000
-RDATE:19740106T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19460428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19731028T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19610430T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19470427T020000
-RDATE:19460101T000000
-RDATE:19410427T020000
-RDATE:19210501T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19601030T020000
-RDATE:19601030T020000
-RDATE:19591025T020000
-RDATE:19581026T020000
-RDATE:19571027T020000
-RDATE:19561028T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19460602T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19210901T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19210101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0543
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Kentucky/Monticello.ics b/libical/zoneinfo/America/Kentucky/Monticello.ics
index c517b46c7f..02e21276c9 100644
--- a/libical/zoneinfo/America/Kentucky/Monticello.ics
+++ b/libical/zoneinfo/America/Kentucky/Monticello.ics
@@ -2,139 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Kentucky/Monticello
+TZID:/softwarestudio.org/Olson_20011030_5/America/Kentucky/Monticello
 X-LIC-LOCATION:America/Kentucky/Monticello
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:20010401T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19950402T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19680101T000000
-RDATE:19680101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0539
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/La_Paz.ics b/libical/zoneinfo/America/La_Paz.ics
index 40da6c6845..7bf54edd30 100644
--- a/libical/zoneinfo/America/La_Paz.ics
+++ b/libical/zoneinfo/America/La_Paz.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/La_Paz
+TZID:/softwarestudio.org/Olson_20011030_5/America/La_Paz
 X-LIC-LOCATION:America/La_Paz
 BEGIN:STANDARD
-TZOFFSETFROM:-0333
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:BOT
-DTSTART:19320321T000000
-RDATE:19320321T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0433
-TZOFFSETTO:-0333
-TZNAME:BOST
-DTSTART:19311015T000000
-RDATE:19311015T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0433
-TZOFFSETTO:-0433
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Lima.ics b/libical/zoneinfo/America/Lima.ics
index 710d24ac4e..4dad17ba16 100644
--- a/libical/zoneinfo/America/Lima.ics
+++ b/libical/zoneinfo/America/Lima.ics
@@ -2,45 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Lima
+TZID:/softwarestudio.org/Olson_20011030_5/America/Lima
 X-LIC-LOCATION:America/Lima
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:PET
-DTSTART:19940401T000000
-RDATE:19940401T000000
-RDATE:19900401T000000
-RDATE:19870401T000000
-RDATE:19400324T000000
-RDATE:19390326T000000
-RDATE:19380401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:PEST
-DTSTART:19940101T000000
-RDATE:19940101T000000
-RDATE:19900101T000000
-RDATE:19870101T000000
-RDATE:19390924T000000
-RDATE:19380925T000000
-RDATE:19380101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0509
 TZOFFSETTO:-0500
 TZNAME:PET
-DTSTART:19080728T000000
-RDATE:19080728T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0508
-TZOFFSETTO:-0509
-TZNAME:LMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Los_Angeles.ics b/libical/zoneinfo/America/Los_Angeles.ics
index 2cafecb961..2a9fb2a8d3 100644
--- a/libical/zoneinfo/America/Los_Angeles.ics
+++ b/libical/zoneinfo/America/Los_Angeles.ics
@@ -2,118 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Los_Angeles
+TZID:/softwarestudio.org/Olson_20011030_5/America/Los_Angeles
 X-LIC-LOCATION:America/Los_Angeles
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19621028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19480314T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19610924T020000
-RDATE:19610924T020000
-RDATE:19600925T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490101T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:PPT
-DTSTART:19450814T160000
-RDATE:19450814T160000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0753
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Louisville.ics b/libical/zoneinfo/America/Louisville.ics
index 76780adc63..4dff88643f 100644
--- a/libical/zoneinfo/America/Louisville.ics
+++ b/libical/zoneinfo/America/Louisville.ics
@@ -2,152 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Louisville
+TZID:/softwarestudio.org/Olson_20011030_5/America/Louisville
 X-LIC-LOCATION:America/Louisville
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19751026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19741027T020000
-RDATE:19741027T020000
-RDATE:19680101T000000
-RDATE:19610723T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19740106T020000
-RDATE:19740106T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19460428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19731028T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19610430T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19470427T020000
-RDATE:19460101T000000
-RDATE:19410427T020000
-RDATE:19210501T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19601030T020000
-RDATE:19601030T020000
-RDATE:19591025T020000
-RDATE:19581026T020000
-RDATE:19571027T020000
-RDATE:19561028T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19460602T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19210901T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19210101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0543
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Maceio.ics b/libical/zoneinfo/America/Maceio.ics
index 28e47f166a..ee358782de 100644
--- a/libical/zoneinfo/America/Maceio.ics
+++ b/libical/zoneinfo/America/Maceio.ics
@@ -2,88 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Maceio
+TZID:/softwarestudio.org/Olson_20011030_5/America/Maceio
 X-LIC-LOCATION:America/Maceio
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:20020217T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20010913T000000
-RDATE:20010913T000000
-RDATE:19990930T000000
-RDATE:19960904T000000
-RDATE:19951013T000000
-RDATE:19900917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20001022T000000
-RDATE:20001022T000000
-RDATE:20000227T000000
-RDATE:19960211T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19951015T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0223
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Managua.ics b/libical/zoneinfo/America/Managua.ics
index 4e7f8662f0..41f614f8bf 100644
--- a/libical/zoneinfo/America/Managua.ics
+++ b/libical/zoneinfo/America/Managua.ics
@@ -2,49 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Managua
+TZID:/softwarestudio.org/Olson_20011030_5/America/Managua
 X-LIC-LOCATION:America/Managua
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19981201T000000
-RDATE:19981201T000000
-RDATE:19920924T000000
-RDATE:19800623T000000
-RDATE:19790625T000000
-RDATE:19750216T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19930101T040000
-RDATE:19930101T040000
-RDATE:19730501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19920101T040000
-RDATE:19920101T040000
-RDATE:19800316T000000
-RDATE:19790318T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19340623T000000
-RDATE:19340623T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0545
-TZOFFSETTO:-0545
-TZNAME:MMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Manaus.ics b/libical/zoneinfo/America/Manaus.ics
index be205d2c19..5a0c53f969 100644
--- a/libical/zoneinfo/America/Manaus.ics
+++ b/libical/zoneinfo/America/Manaus.ics
@@ -2,59 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Manaus
+TZID:/softwarestudio.org/Olson_20011030_5/America/Manaus
 X-LIC-LOCATION:America/Manaus
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19940922T000000
-RDATE:19940922T000000
-RDATE:19930928T000000
-RDATE:19880912T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:19940220T000000
-RDATE:19940220T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:19931017T000000
-RDATE:19931017T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Martinique.ics b/libical/zoneinfo/America/Martinique.ics
index 04e22dbfc2..ae259351f9 100644
--- a/libical/zoneinfo/America/Martinique.ics
+++ b/libical/zoneinfo/America/Martinique.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Martinique
+TZID:/softwarestudio.org/Olson_20011030_5/America/Martinique
 X-LIC-LOCATION:America/Martinique
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19800928T000000
-RDATE:19800928T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19800406T000000
-RDATE:19800406T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0404
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110501T000000
-RDATE:19110501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0404
-TZOFFSETTO:-0404
-TZNAME:FFMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mazatlan.ics b/libical/zoneinfo/America/Mazatlan.ics
index b44df62a84..d868b4cd26 100644
--- a/libical/zoneinfo/America/Mazatlan.ics
+++ b/libical/zoneinfo/America/Mazatlan.ics
@@ -2,76 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Mazatlan
+TZID:/softwarestudio.org/Olson_20011030_5/America/Mazatlan
 X-LIC-LOCATION:America/Mazatlan
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:20010506T020000
+DTSTART:19700503T020000
 RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:20010930T020000
+DTSTART:19700927T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19420424T000000
-RDATE:19311001T000000
-RDATE:19301115T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19700101T000000
-RDATE:19700101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19490114T000000
-RDATE:19490114T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19310501T230000
-RDATE:19270610T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0706
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19211231T235420
-RDATE:19211231T235420
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mendoza.ics b/libical/zoneinfo/America/Mendoza.ics
index 70c552df29..e2a2e33f2f 100644
--- a/libical/zoneinfo/America/Mendoza.ics
+++ b/libical/zoneinfo/America/Mendoza.ics
@@ -2,147 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Mendoza
+TZID:/softwarestudio.org/Olson_20011030_5/America/Mendoza
 X-LIC-LOCATION:America/Mendoza
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19921018T000000
-RDATE:19921018T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19920301T000000
-RDATE:19920301T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:WARST
-DTSTART:19911015T000000
-RDATE:19911015T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0400
-TZNAME:WART
-DTSTART:19910303T000000
-RDATE:19910303T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19901021T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19900304T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0435
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Menominee.ics b/libical/zoneinfo/America/Menominee.ics
index 1473c5cd30..e86d668237 100644
--- a/libical/zoneinfo/America/Menominee.ics
+++ b/libical/zoneinfo/America/Menominee.ics
@@ -2,97 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Menominee
+TZID:/softwarestudio.org/Olson_20011030_5/America/Menominee
 X-LIC-LOCATION:America/Menominee
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19731028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19660424T020000
-RDATE:19460428T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19730429T020000
-RDATE:19730429T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19690427T020000
-RDATE:19690427T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19661030T020000
-RDATE:19661030T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CPT
-DTSTART:19450814T180000
-RDATE:19450814T180000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0550
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18850918T120000
-RDATE:18850918T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Merida.ics b/libical/zoneinfo/America/Merida.ics
index f25f275b03..120f33f6de 100644
--- a/libical/zoneinfo/America/Merida.ics
+++ b/libical/zoneinfo/America/Merida.ics
@@ -2,58 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Merida
+TZID:/softwarestudio.org/Olson_20011030_5/America/Merida
 X-LIC-LOCATION:America/Merida
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:20010506T020000
+DTSTART:19700503T020000
 RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:20010930T020000
+DTSTART:19700927T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19821202T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19811223T000000
-RDATE:19811223T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0558
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19220101T000132
-RDATE:19220101T000132
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Mexico_City.ics b/libical/zoneinfo/America/Mexico_City.ics
index 85e67eb4e3..c6df61f470 100644
--- a/libical/zoneinfo/America/Mexico_City.ics
+++ b/libical/zoneinfo/America/Mexico_City.ics
@@ -2,69 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Mexico_City
+TZID:/softwarestudio.org/Olson_20011030_5/America/Mexico_City
 X-LIC-LOCATION:America/Mexico_City
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20010930T020000
-RDATE:20010930T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19500730T000000
-RDATE:19440501T000000
-RDATE:19410401T000000
-RDATE:19390625T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20010506T020000
-RDATE:20010506T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19500212T000000
-RDATE:19401209T000000
-RDATE:19390205T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19431216T000000
-RDATE:19431216T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19310501T230000
-RDATE:19270610T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19311001T000000
-RDATE:19311001T000000
-RDATE:19301115T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0637
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19220101T002324
-RDATE:19220101T002324
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Miquelon.ics b/libical/zoneinfo/America/Miquelon.ics
index a7f4a69bb5..315e7f86fd 100644
--- a/libical/zoneinfo/America/Miquelon.ics
+++ b/libical/zoneinfo/America/Miquelon.ics
@@ -2,47 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Miquelon
+TZID:/softwarestudio.org/Olson_20011030_5/America/Miquelon
 X-LIC-LOCATION:America/Miquelon
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:PMST
-DTSTART:19801026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:PMDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:PMDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0200
-TZNAME:PMDT
-DTSTART:19800501T000000
-RDATE:19800501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19110515T000000
-RDATE:19110515T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Monterrey.ics b/libical/zoneinfo/America/Monterrey.ics
index e251f93671..dc695cc45c 100644
--- a/libical/zoneinfo/America/Monterrey.ics
+++ b/libical/zoneinfo/America/Monterrey.ics
@@ -2,60 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Monterrey
+TZID:/softwarestudio.org/Olson_20011030_5/America/Monterrey
 X-LIC-LOCATION:America/Monterrey
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:20010506T020000
+DTSTART:19700503T020000
 RRULE:FREQ=YEARLY;BYMONTH=5;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:20010930T020000
+DTSTART:19700927T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19881030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19880403T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19890101T000000
-RDATE:19890101T000000
-RDATE:19880101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0641
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19211231T231844
-RDATE:19211231T231844
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Montevideo.ics b/libical/zoneinfo/America/Montevideo.ics
index 91b3acdb5c..377f7f9d33 100644
--- a/libical/zoneinfo/America/Montevideo.ics
+++ b/libical/zoneinfo/America/Montevideo.ics
@@ -2,132 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Montevideo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Montevideo
 X-LIC-LOCATION:America/Montevideo
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:UYT
-DTSTART:19930228T000000
-RDATE:19930228T000000
-RDATE:19920301T000000
-RDATE:19910303T000000
-RDATE:19900304T000000
-RDATE:19890312T000000
-RDATE:19880314T000000
-RDATE:19800501T000000
-RDATE:19780401T000000
-RDATE:19761001T000000
-RDATE:19720815T000000
-RDATE:19671031T000000
-RDATE:19661031T000000
-RDATE:19650926T000000
-RDATE:19600306T000000
-RDATE:19591115T000000
-RDATE:19430314T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:UYST
-DTSTART:19921018T000000
-RDATE:19921018T000000
-RDATE:19911027T000000
-RDATE:19901021T000000
-RDATE:19891029T000000
-RDATE:19881211T000000
-RDATE:19871214T000000
-RDATE:19791001T000000
-RDATE:19771204T000000
-RDATE:19720424T000000
-RDATE:19670402T000000
-RDATE:19660403T000000
-RDATE:19650404T000000
-RDATE:19600117T000000
-RDATE:19590524T000000
-RDATE:19421214T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0200
-TZNAME:UYST
-DTSTART:19741222T000000
-RDATE:19741222T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0230
-TZNAME:UYHST
-DTSTART:19740310T000000
-RDATE:19740310T000000
-RDATE:19700527T000000
-RDATE:19690527T000000
-RDATE:19680527T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0230
 TZOFFSETTO:-0300
 TZNAME:UYT
-DTSTART:19701202T000000
-RDATE:19701202T000000
-RDATE:19691202T000000
-RDATE:19681202T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0300
-TZNAME:UYHST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-RDATE:19401027T000000
-RDATE:19391029T000000
-RDATE:19381030T000000
-RDATE:19371031T000000
-RDATE:19361101T000000
-RDATE:19351027T000000
-RDATE:19341028T000000
-RDATE:19331029T000000
-RDATE:19251001T000000
-RDATE:19241001T000000
-RDATE:19231002T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0330
-TZNAME:UYT
-DTSTART:19410801T000000
-RDATE:19410801T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0330
-TZNAME:UYT
-DTSTART:19410330T000000
-RDATE:19410330T000000
-RDATE:19400331T000000
-RDATE:19390326T000000
-RDATE:19380327T000000
-RDATE:19370328T000000
-RDATE:19360329T000000
-RDATE:19350331T000000
-RDATE:19340401T000000
-RDATE:19260401T000000
-RDATE:19250401T000000
-RDATE:19240401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0330
-TZNAME:UYT
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0345
-TZOFFSETTO:-0345
-TZNAME:MMT
-DTSTART:18980628T000000
-RDATE:18980628T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Montreal.ics b/libical/zoneinfo/America/Montreal.ics
index d1b22d572b..4a00cb53d0 100644
--- a/libical/zoneinfo/America/Montreal.ics
+++ b/libical/zoneinfo/America/Montreal.ics
@@ -2,138 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Montreal
+TZID:/softwarestudio.org/Olson_20011030_5/America/Montreal
 X-LIC-LOCATION:America/Montreal
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19571027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19400428T000000
-RDATE:19390430T000000
-RDATE:19380424T000000
-RDATE:19370425T000000
-RDATE:19360426T000000
-RDATE:19350428T000000
-RDATE:19340429T000000
-RDATE:19330430T000000
-RDATE:19320501T000000
-RDATE:19310426T000000
-RDATE:19300427T000000
-RDATE:19290428T000000
-RDATE:19280429T000000
-RDATE:19270501T000000
-RDATE:19260502T020000
-RDATE:19250503T020000
-RDATE:19240517T020000
-RDATE:19220430T020000
-RDATE:19210501T020000
-RDATE:19200502T023000
-RDATE:19190331T023000
-RDATE:19180414T020000
-RDATE:19170325T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19560930T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19501029T020000
-RDATE:19491030T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19390924T000000
-RDATE:19380925T000000
-RDATE:19370926T000000
-RDATE:19360927T000000
-RDATE:19350929T000000
-RDATE:19340930T000000
-RDATE:19331001T000000
-RDATE:19320925T000000
-RDATE:19310927T000000
-RDATE:19300928T000000
-RDATE:19290929T000000
-RDATE:19280930T000000
-RDATE:19270925T000000
-RDATE:19260926T023000
-RDATE:19250927T023000
-RDATE:19240928T023000
-RDATE:19221001T023000
-RDATE:19211002T023000
-RDATE:19201003T023000
-RDATE:19191025T023000
-RDATE:19181031T020000
-RDATE:19170424T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0454
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Montserrat.ics b/libical/zoneinfo/America/Montserrat.ics
index c5734bc141..16bc0e52e3 100644
--- a/libical/zoneinfo/America/Montserrat.ics
+++ b/libical/zoneinfo/America/Montserrat.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Montserrat
+TZID:/softwarestudio.org/Olson_20011030_4/America/Montserrat
 X-LIC-LOCATION:America/Montserrat
 BEGIN:STANDARD
-TZOFFSETFROM:-0409
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110701T000100
-RDATE:19110701T000100
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nassau.ics b/libical/zoneinfo/America/Nassau.ics
index 8e819e0608..d94ba74010 100644
--- a/libical/zoneinfo/America/Nassau.ics
+++ b/libical/zoneinfo/America/Nassau.ics
@@ -2,57 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Nassau
+TZID:/softwarestudio.org/Olson_20011030_5/America/Nassau
 X-LIC-LOCATION:America/Nassau
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19641025T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0509
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19120302T000000
-RDATE:19120302T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/New_York.ics b/libical/zoneinfo/America/New_York.ics
index 2bc21b7ab9..65c5dd14e9 100644
--- a/libical/zoneinfo/America/New_York.ics
+++ b/libical/zoneinfo/America/New_York.ics
@@ -2,163 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/New_York
+TZID:/softwarestudio.org/Olson_20011030_5/America/New_York
 X-LIC-LOCATION:America/New_York
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19551030T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19410427T020000
-RDATE:19400428T020000
-RDATE:19390430T020000
-RDATE:19380424T020000
-RDATE:19370425T020000
-RDATE:19360426T020000
-RDATE:19350428T020000
-RDATE:19340429T020000
-RDATE:19330430T020000
-RDATE:19320424T020000
-RDATE:19310426T020000
-RDATE:19300427T020000
-RDATE:19290428T020000
-RDATE:19280429T020000
-RDATE:19270424T020000
-RDATE:19260425T020000
-RDATE:19250426T020000
-RDATE:19240427T020000
-RDATE:19230429T020000
-RDATE:19220430T020000
-RDATE:19210424T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19540926T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19460929T020000
-RDATE:19450930T020000
-RDATE:19410928T020000
-RDATE:19400929T020000
-RDATE:19390924T020000
-RDATE:19380925T020000
-RDATE:19370926T020000
-RDATE:19360927T020000
-RDATE:19350929T020000
-RDATE:19340930T020000
-RDATE:19330924T020000
-RDATE:19320925T020000
-RDATE:19310927T020000
-RDATE:19300928T020000
-RDATE:19290929T020000
-RDATE:19280930T020000
-RDATE:19270925T020000
-RDATE:19260926T020000
-RDATE:19250927T020000
-RDATE:19240928T020000
-RDATE:19230930T020000
-RDATE:19220924T020000
-RDATE:19210925T020000
-RDATE:19201031T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:EPT
-DTSTART:19450814T190000
-RDATE:19450814T190000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0456
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nipigon.ics b/libical/zoneinfo/America/Nipigon.ics
index 6cea598d0d..7605b6a62d 100644
--- a/libical/zoneinfo/America/Nipigon.ics
+++ b/libical/zoneinfo/America/Nipigon.ics
@@ -2,63 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Nipigon
+TZID:/softwarestudio.org/Olson_20011030_5/America/Nipigon
 X-LIC-LOCATION:America/Nipigon
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19741027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0553
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Nome.ics b/libical/zoneinfo/America/Nome.ics
index 4995f5d4c0..1e6306a7dd 100644
--- a/libical/zoneinfo/America/Nome.ics
+++ b/libical/zoneinfo/America/Nome.ics
@@ -2,129 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Nome
+TZID:/softwarestudio.org/Olson_20011030_5/America/Nome
 X-LIC-LOCATION:America/Nome
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:AKST
-DTSTART:19841028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0800
 TZNAME:AKDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-0900
-TZNAME:AKST
-DTSTART:19831030T020000
-RDATE:19831030T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:BDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19821031T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19670401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19460101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1000
-TZOFFSETTO:-1000
-TZNAME:NPT
-DTSTART:19450814T130000
-RDATE:19450814T130000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1000
-TZNAME:NWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1102
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19000820T120000
-RDATE:19000820T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1258
-TZOFFSETTO:-1102
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Noronha.ics b/libical/zoneinfo/America/Noronha.ics
index 5f0ea19552..47fe40ca81 100644
--- a/libical/zoneinfo/America/Noronha.ics
+++ b/libical/zoneinfo/America/Noronha.ics
@@ -2,65 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Noronha
+TZID:/softwarestudio.org/Olson_20011030_5/America/Noronha
 X-LIC-LOCATION:America/Noronha
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0200
 TZNAME:FNT
-DTSTART:19900917T000000
-RDATE:19900917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:-0200
-TZNAME:FNT
-DTSTART:19900211T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:FNST
-DTSTART:19891015T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0210
-TZOFFSETTO:-0200
-TZNAME:FNT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/North_Dakota/Center.ics b/libical/zoneinfo/America/North_Dakota/Center.ics
index 73509f5bd7..45b40b4259 100644
--- a/libical/zoneinfo/America/North_Dakota/Center.ics
+++ b/libical/zoneinfo/America/North_Dakota/Center.ics
@@ -2,117 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_1/America/North_Dakota/Center
+TZID:/softwarestudio.org/Olson_20011030_2/America/North_Dakota/Center
 X-LIC-LOCATION:America/North_Dakota/Center
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19930404T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19931031T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19921025T020000
-RDATE:19921025T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19920405T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19911027T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19450930T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MPT
-DTSTART:19450814T170000
-RDATE:19450814T170000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0645
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18831118T120000
-RDATE:18831118T120000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Panama.ics b/libical/zoneinfo/America/Panama.ics
index ee00141f00..4888e946c4 100644
--- a/libical/zoneinfo/America/Panama.ics
+++ b/libical/zoneinfo/America/Panama.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Panama
+TZID:/softwarestudio.org/Olson_20011030_5/America/Panama
 X-LIC-LOCATION:America/Panama
 BEGIN:STANDARD
-TZOFFSETFROM:-0520
+TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19080422T000000
-RDATE:19080422T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0518
-TZOFFSETTO:-0520
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Pangnirtung.ics b/libical/zoneinfo/America/Pangnirtung.ics
index 07ced5f342..2dcc7cd976 100644
--- a/libical/zoneinfo/America/Pangnirtung.ics
+++ b/libical/zoneinfo/America/Pangnirtung.ics
@@ -2,144 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Pangnirtung
+TZID:/softwarestudio.org/Olson_20011030_5/America/Pangnirtung
 X-LIC-LOCATION:America/Pangnirtung
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:20010401T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19990404T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19981025T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19950402T020000
-RDATE:19950402T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19941030T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19940403T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0200
-TZNAME:ADDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0423
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Paramaribo.ics b/libical/zoneinfo/America/Paramaribo.ics
index 2a3b3e1e2b..ad549c2c2c 100644
--- a/libical/zoneinfo/America/Paramaribo.ics
+++ b/libical/zoneinfo/America/Paramaribo.ics
@@ -2,36 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Paramaribo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Paramaribo
 X-LIC-LOCATION:America/Paramaribo
 BEGIN:STANDARD
-TZOFFSETFROM:-0330
+TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:SRT
-DTSTART:19841001T000000
-RDATE:19841001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0330
-TZNAME:SRT
-DTSTART:19751120T000000
-RDATE:19751120T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0341
-TZOFFSETTO:-0330
-TZNAME:NEGT
-DTSTART:19451001T000000
-RDATE:19451001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0341
-TZOFFSETTO:-0341
-TZNAME:PMT
-DTSTART:19350101T000000
-RDATE:19350101T000000
-RDATE:19110101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Phoenix.ics b/libical/zoneinfo/America/Phoenix.ics
index f544096537..4983ccb234 100644
--- a/libical/zoneinfo/America/Phoenix.ics
+++ b/libical/zoneinfo/America/Phoenix.ics
@@ -2,50 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Phoenix
+TZID:/softwarestudio.org/Olson_20011030_5/America/Phoenix
 X-LIC-LOCATION:America/Phoenix
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19680101T000000
-RDATE:19680101T000000
-RDATE:19670101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19671029T020000
-RDATE:19671029T020000
-RDATE:19441001T000100
-RDATE:19440101T000100
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19670430T020000
-RDATE:19670430T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19440317T000100
-RDATE:19440317T000100
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0728
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18831118T120000
-RDATE:18831118T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Port-au-Prince.ics b/libical/zoneinfo/America/Port-au-Prince.ics
index fb67aea0fc..18df6f958b 100644
--- a/libical/zoneinfo/America/Port-au-Prince.ics
+++ b/libical/zoneinfo/America/Port-au-Prince.ics
@@ -2,63 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Port-au-Prince
+TZID:/softwarestudio.org/Olson_20011030_5/America/Port-au-Prince
 X-LIC-LOCATION:America/Port-au-Prince
 BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19971026T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T000000
-RDATE:19861026T000000
-RDATE:19851027T000000
-RDATE:19841028T000000
-RDATE:19831030T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19970406T010000
-RDATE:19970406T010000
-RDATE:19960407T010000
-RDATE:19950402T010000
-RDATE:19940403T010000
-RDATE:19930404T010000
-RDATE:19920405T010000
-RDATE:19910407T010000
-RDATE:19900401T010000
-RDATE:19890402T010000
-RDATE:19880403T010000
-RDATE:19870426T000000
-RDATE:19860427T000000
-RDATE:19850428T000000
-RDATE:19840429T000000
-RDATE:19830508T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0449
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19170124T120000
-RDATE:19170124T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0449
-TZOFFSETTO:-0449
-TZNAME:PPMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Port_of_Spain.ics b/libical/zoneinfo/America/Port_of_Spain.ics
index 299a2d52f8..6c5deb5e51 100644
--- a/libical/zoneinfo/America/Port_of_Spain.ics
+++ b/libical/zoneinfo/America/Port_of_Spain.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Port_of_Spain
+TZID:/softwarestudio.org/Olson_20011030_4/America/Port_of_Spain
 X-LIC-LOCATION:America/Port_of_Spain
 BEGIN:STANDARD
-TZOFFSETFROM:-0406
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19120302T000000
-RDATE:19120302T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Porto_Velho.ics b/libical/zoneinfo/America/Porto_Velho.ics
index 345b789d58..9671656ba1 100644
--- a/libical/zoneinfo/America/Porto_Velho.ics
+++ b/libical/zoneinfo/America/Porto_Velho.ics
@@ -2,61 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Porto_Velho
+TZID:/softwarestudio.org/Olson_20011030_5/America/Porto_Velho
 X-LIC-LOCATION:America/Porto_Velho
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AMT
-DTSTART:19880912T000000
-RDATE:19880912T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:19880207T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AMST
-DTSTART:19871025T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0416
-TZOFFSETTO:-0400
-TZNAME:AMT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Puerto_Rico.ics b/libical/zoneinfo/America/Puerto_Rico.ics
index d85ee58eb6..dd808912eb 100644
--- a/libical/zoneinfo/America/Puerto_Rico.ics
+++ b/libical/zoneinfo/America/Puerto_Rico.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Puerto_Rico
+TZID:/softwarestudio.org/Olson_20011030_5/America/Puerto_Rico
 X-LIC-LOCATION:America/Puerto_Rico
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:AWT
-DTSTART:19420503T000000
-RDATE:19420503T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0424
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:18990328T120000
-RDATE:18990328T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rainy_River.ics b/libical/zoneinfo/America/Rainy_River.ics
index 7a61f37f9a..4d1b919bf5 100644
--- a/libical/zoneinfo/America/Rainy_River.ics
+++ b/libical/zoneinfo/America/Rainy_River.ics
@@ -2,63 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Rainy_River
+TZID:/softwarestudio.org/Olson_20011030_5/America/Rainy_River
 X-LIC-LOCATION:America/Rainy_River
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19741027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0618
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rankin_Inlet.ics b/libical/zoneinfo/America/Rankin_Inlet.ics
index bf08744c66..16e300de51 100644
--- a/libical/zoneinfo/America/Rankin_Inlet.ics
+++ b/libical/zoneinfo/America/Rankin_Inlet.ics
@@ -2,121 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Rankin_Inlet
+TZID:/softwarestudio.org/Olson_20011030_5/America/Rankin_Inlet
 X-LIC-LOCATION:America/Rankin_Inlet
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:20020407T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20010401T020000
-RDATE:20010401T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19950402T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-RDATE:19920405T020000
-RDATE:19910407T020000
-RDATE:19900401T020000
-RDATE:19890402T020000
-RDATE:19880403T020000
-RDATE:19870405T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19991031T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0400
-TZNAME:CDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0609
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Recife.ics b/libical/zoneinfo/America/Recife.ics
index 47085761cc..5e87489847 100644
--- a/libical/zoneinfo/America/Recife.ics
+++ b/libical/zoneinfo/America/Recife.ics
@@ -2,84 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Recife
+TZID:/softwarestudio.org/Olson_20011030_5/America/Recife
 X-LIC-LOCATION:America/Recife
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:20020217T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20010913T000000
-RDATE:20010913T000000
-RDATE:19990930T000000
-RDATE:19900917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20001015T000000
-RDATE:20001015T000000
-RDATE:20000227T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0220
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Regina.ics b/libical/zoneinfo/America/Regina.ics
index 464c610b2d..39d6b798f4 100644
--- a/libical/zoneinfo/America/Regina.ics
+++ b/libical/zoneinfo/America/Regina.ics
@@ -2,91 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Regina
+TZID:/softwarestudio.org/Olson_20011030_5/America/Regina
 X-LIC-LOCATION:America/Regina
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19600424T020000
-RDATE:19600424T020000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19591025T020000
-RDATE:19591025T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19461013T020000
-RDATE:19450930T020000
-RDATE:19411012T000000
-RDATE:19401013T000000
-RDATE:19391008T000000
-RDATE:19381002T000000
-RDATE:19371010T000000
-RDATE:19341007T000000
-RDATE:19331001T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19301005T000000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19590426T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460414T020000
-RDATE:19410413T000000
-RDATE:19400414T000000
-RDATE:19390409T000000
-RDATE:19380410T000000
-RDATE:19370411T000000
-RDATE:19340506T000000
-RDATE:19330507T000000
-RDATE:19320501T000000
-RDATE:19310503T000000
-RDATE:19300504T000000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0659
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19050901T000000
-RDATE:19050901T000000
+TZNAME:CST
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rio_Branco.ics b/libical/zoneinfo/America/Rio_Branco.ics
index 608d94d790..602cb052a6 100644
--- a/libical/zoneinfo/America/Rio_Branco.ics
+++ b/libical/zoneinfo/America/Rio_Branco.ics
@@ -2,61 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Rio_Branco
+TZID:/softwarestudio.org/Olson_20011030_5/America/Rio_Branco
 X-LIC-LOCATION:America/Rio_Branco
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0500
 TZNAME:ACT
-DTSTART:19880912T000000
-RDATE:19880912T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:ACT
-DTSTART:19880207T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:ACST
-DTSTART:19871025T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631209T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0431
-TZOFFSETTO:-0500
-TZNAME:ACT
-DTSTART:19140101T000000
-RDATE:19140101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Rosario.ics b/libical/zoneinfo/America/Rosario.ics
index a23f9ba5f3..4c40308c60 100644
--- a/libical/zoneinfo/America/Rosario.ics
+++ b/libical/zoneinfo/America/Rosario.ics
@@ -2,127 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Rosario
+TZID:/softwarestudio.org/Olson_20011030_5/America/Rosario
 X-LIC-LOCATION:America/Rosario
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0300
 TZNAME:ART
-DTSTART:20000303T000000
-RDATE:20000303T000000
-RDATE:19910701T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19910303T000000
-RDATE:19910303T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880207T000000
-RDATE:19870213T000000
-RDATE:19860314T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19901021T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881201T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-RDATE:19640301T000000
-RDATE:19631001T000000
-RDATE:19460301T000000
-RDATE:19430801T000000
-RDATE:19410615T000000
-RDATE:19400301T000000
-RDATE:19390301T000000
-RDATE:19380301T000000
-RDATE:19370301T000000
-RDATE:19360301T000000
-RDATE:19350301T000000
-RDATE:19340301T000000
-RDATE:19330301T000000
-RDATE:19320301T000000
-RDATE:19310401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-RDATE:19641015T000000
-RDATE:19631215T000000
-RDATE:19461001T000000
-RDATE:19431015T000000
-RDATE:19411015T000000
-RDATE:19400701T000000
-RDATE:19391101T000000
-RDATE:19381101T000000
-RDATE:19371101T000000
-RDATE:19361101T000000
-RDATE:19351101T000000
-RDATE:19341101T000000
-RDATE:19331101T000000
-RDATE:19321101T000000
-RDATE:19311015T000000
-RDATE:19301201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0417
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19200501T000000
-RDATE:19200501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0403
-TZOFFSETTO:-0417
-TZNAME:CMT
-DTSTART:18941101T000000
-RDATE:18941101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Santiago.ics b/libical/zoneinfo/America/Santiago.ics
index 332f100a45..6db0e94976 100644
--- a/libical/zoneinfo/America/Santiago.ics
+++ b/libical/zoneinfo/America/Santiago.ics
@@ -2,144 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Santiago
+TZID:/softwarestudio.org/Olson_20011030_5/America/Santiago
 X-LIC-LOCATION:America/Santiago
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:CLST
-DTSTART:19991010T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:CLT
-DTSTART:20000312T000000
+DTSTART:19700315T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:CLT
-DTSTART:19990404T000000
-RDATE:19990404T000000
-RDATE:19980315T000000
-RDATE:19970309T000000
-RDATE:19960310T000000
-RDATE:19950312T000000
-RDATE:19940313T000000
-RDATE:19930314T000000
-RDATE:19920315T000000
-RDATE:19910310T000000
-RDATE:19900311T000000
-RDATE:19890312T000000
-RDATE:19880313T000000
-RDATE:19870315T000000
-RDATE:19860309T000000
-RDATE:19850310T000000
-RDATE:19840311T000000
-RDATE:19830313T000000
-RDATE:19820314T000000
-RDATE:19810315T000000
-RDATE:19800309T000000
-RDATE:19790311T000000
-RDATE:19780312T000000
-RDATE:19770313T000000
-RDATE:19760314T000000
-RDATE:19750309T000000
-RDATE:19740310T000000
-RDATE:19730311T000000
-RDATE:19720312T000000
-RDATE:19710314T000000
-RDATE:19700315T000000
-RDATE:19690309T000000
-RDATE:19680310T000000
-RDATE:19670312T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:CLST
-DTSTART:19980927T000000
-RDATE:19980927T000000
-RDATE:19971012T000000
-RDATE:19961013T000000
-RDATE:19951015T000000
-RDATE:19941009T000000
-RDATE:19931010T000000
-RDATE:19921011T000000
-RDATE:19911013T000000
-RDATE:19901014T000000
-RDATE:19891015T000000
-RDATE:19881009T000000
-RDATE:19871011T000000
-RDATE:19861012T000000
-RDATE:19851013T000000
-RDATE:19841014T000000
-RDATE:19831009T000000
-RDATE:19821010T000000
-RDATE:19811011T000000
-RDATE:19801012T000000
-RDATE:19791014T000000
-RDATE:19781015T000000
-RDATE:19771009T000000
-RDATE:19761010T000000
-RDATE:19751012T000000
-RDATE:19741013T000000
-RDATE:19731014T000000
-RDATE:19721015T000000
-RDATE:19711010T000000
-RDATE:19701011T000000
-RDATE:19691012T000000
-RDATE:19681013T000000
-RDATE:19671015T000000
-RDATE:19661009T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:CLT
-DTSTART:19320901T000000
-RDATE:19320901T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:CLT
-DTSTART:19320401T000000
-RDATE:19320401T000000
-RDATE:19310401T000000
-RDATE:19300401T000000
-RDATE:19290401T000000
-RDATE:19280401T000000
-RDATE:19190702T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:CLST
-DTSTART:19310901T000000
-RDATE:19310901T000000
-RDATE:19300901T000000
-RDATE:19290901T000000
-RDATE:19280901T000000
-RDATE:19270901T000000
-RDATE:19180901T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0443
-TZOFFSETTO:-0500
-TZNAME:CLT
-DTSTART:19100101T000000
-RDATE:19100101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0443
-TZOFFSETTO:-0443
-TZNAME:SMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Santo_Domingo.ics b/libical/zoneinfo/America/Santo_Domingo.ics
index 7a1d0cb263..028940d5ef 100644
--- a/libical/zoneinfo/America/Santo_Domingo.ics
+++ b/libical/zoneinfo/America/Santo_Domingo.ics
@@ -2,66 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Santo_Domingo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Santo_Domingo
 X-LIC-LOCATION:America/Santo_Domingo
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:20001203T010000
-RDATE:20001203T010000
-RDATE:19741027T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19670228T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0430
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19740121T000000
-RDATE:19740121T000000
-RDATE:19730121T000000
-RDATE:19720121T000000
-RDATE:19710120T000000
-RDATE:19700221T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0430
-TZNAME:EHDT
-DTSTART:19731028T000000
-RDATE:19731028T000000
-RDATE:19721029T000000
-RDATE:19711031T000000
-RDATE:19701025T000000
-RDATE:19691026T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19661030T000000
-RDATE:19661030T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0440
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19330401T120000
-RDATE:19330401T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0440
-TZOFFSETTO:-0440
-TZNAME:SDMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+TZNAME:AST
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Sao_Paulo.ics b/libical/zoneinfo/America/Sao_Paulo.ics
index 0ee6cb277d..f1fef9de77 100644
--- a/libical/zoneinfo/America/Sao_Paulo.ics
+++ b/libical/zoneinfo/America/Sao_Paulo.ics
@@ -2,99 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Sao_Paulo
+TZID:/softwarestudio.org/Olson_20011030_5/America/Sao_Paulo
 X-LIC-LOCATION:America/Sao_Paulo
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0200
 TZNAME:BRST
-DTSTART:20001008T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0200
 TZOFFSETTO:-0300
 TZNAME:BRT
-DTSTART:20010218T000000
+DTSTART:19700215T000000
 RRULE:FREQ=YEARLY;BYMONTH=2;BYDAY=3SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:20000227T000000
-RDATE:20000227T000000
-RDATE:19990221T000000
-RDATE:19980301T000000
-RDATE:19970216T000000
-RDATE:19960211T000000
-RDATE:19950219T000000
-RDATE:19940220T000000
-RDATE:19930131T000000
-RDATE:19920209T000000
-RDATE:19910217T000000
-RDATE:19900211T000000
-RDATE:19890129T000000
-RDATE:19880207T000000
-RDATE:19870214T000000
-RDATE:19860315T000000
-RDATE:19680301T000000
-RDATE:19670301T000000
-RDATE:19660301T000000
-RDATE:19650331T000000
-RDATE:19640301T000000
-RDATE:19530301T000000
-RDATE:19520401T000000
-RDATE:19510401T000000
-RDATE:19500416T010000
-RDATE:19330401T000000
-RDATE:19320401T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19991003T000000
-RDATE:19991003T000000
-RDATE:19981011T000000
-RDATE:19971006T000000
-RDATE:19961006T000000
-RDATE:19951015T000000
-RDATE:19941016T000000
-RDATE:19931017T000000
-RDATE:19921025T000000
-RDATE:19911020T000000
-RDATE:19901021T000000
-RDATE:19891015T000000
-RDATE:19881016T000000
-RDATE:19871025T000000
-RDATE:19861025T000000
-RDATE:19851102T000000
-RDATE:19671101T000000
-RDATE:19661101T000000
-RDATE:19651201T000000
-RDATE:19650131T000000
-RDATE:19631023T000000
-RDATE:19521201T000000
-RDATE:19511201T000000
-RDATE:19501201T000000
-RDATE:19491201T000000
-RDATE:19321003T000000
-RDATE:19311003T110000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0200
-TZNAME:BRST
-DTSTART:19640101T000000
-RDATE:19640101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0306
-TZOFFSETTO:-0300
-TZNAME:BRT
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Scoresbysund.ics b/libical/zoneinfo/America/Scoresbysund.ics
index c9c4e6e2ff..38a98e7dc1 100644
--- a/libical/zoneinfo/America/Scoresbysund.ics
+++ b/libical/zoneinfo/America/Scoresbysund.ics
@@ -2,70 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Scoresbysund
+TZID:/softwarestudio.org/Olson_20011030_5/America/Scoresbysund
 X-LIC-LOCATION:America/Scoresbysund
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0100
 TZOFFSETTO:+0000
 TZNAME:EGST
-DTSTART:19820328T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0000
 TZOFFSETTO:-0100
 TZNAME:EGT
-DTSTART:19961027T010000
+DTSTART:19701025T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:EGT
-DTSTART:19950924T010000
-RDATE:19950924T010000
-RDATE:19940925T010000
-RDATE:19930926T010000
-RDATE:19920927T010000
-RDATE:19910929T010000
-RDATE:19900930T010000
-RDATE:19890924T010000
-RDATE:19880925T010000
-RDATE:19870927T010000
-RDATE:19860928T010000
-RDATE:19850929T010000
-RDATE:19840930T010000
-RDATE:19830925T010000
-RDATE:19820926T010000
-RDATE:19810927T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:+0000
-TZNAME:EGST
-DTSTART:19810329T000000
-RDATE:19810329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:-0200
-TZNAME:CGT
-DTSTART:19800928T030000
-RDATE:19800928T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:CGST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0129
-TZOFFSETTO:-0200
-TZNAME:CGT
-DTSTART:19160728T000000
-RDATE:19160728T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Shiprock.ics b/libical/zoneinfo/America/Shiprock.ics
index fc83378b30..66b658270e 100644
--- a/libical/zoneinfo/America/Shiprock.ics
+++ b/libical/zoneinfo/America/Shiprock.ics
@@ -2,89 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Shiprock
+TZID:/softwarestudio.org/Olson_20011030_5/America/Shiprock
 X-LIC-LOCATION:America/Shiprock
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19651031T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19210327T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-RDATE:19200101T000000
-RDATE:18831118T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19210522T020000
-RDATE:19201031T020000
-RDATE:19191026T020000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0600
-TZNAME:MPT
-DTSTART:19450814T170000
-RDATE:19450814T170000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Johns.ics b/libical/zoneinfo/America/St_Johns.ics
index 3e636014de..8fbf3f0ded 100644
--- a/libical/zoneinfo/America/St_Johns.ics
+++ b/libical/zoneinfo/America/St_Johns.ics
@@ -2,221 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/St_Johns
+TZID:/softwarestudio.org/Olson_20011030_5/America/St_Johns
 X-LIC-LOCATION:America/St_Johns
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0330
 TZOFFSETTO:-0230
 TZNAME:NDT
-DTSTART:19890402T000100
+DTSTART:19700405T000100
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0230
 TZOFFSETTO:-0330
 TZNAME:NST
-DTSTART:19891029T000100
+DTSTART:19701025T000100
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0130
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19881030T000100
-RDATE:19881030T000100
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0130
-TZNAME:NDDT
-DTSTART:19880403T000100
-RDATE:19880403T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0230
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19871025T000100
-RDATE:19871025T000100
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19661030T020000
-RDATE:19651031T020000
-RDATE:19641025T020000
-RDATE:19631027T020000
-RDATE:19621028T020000
-RDATE:19611029T020000
-RDATE:19601030T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19501008T020000
-RDATE:19491002T020000
-RDATE:19481003T020000
-RDATE:19471005T020000
-RDATE:19461006T020000
-RDATE:19451007T020000
-RDATE:19440902T000000
-RDATE:19430905T000000
-RDATE:19421231T000000
-RDATE:19411005T000000
-RDATE:19401006T000000
-RDATE:19391001T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351027T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0230
-TZNAME:NDT
-DTSTART:19870405T000100
-RDATE:19870405T000100
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500514T020000
-RDATE:19490508T020000
-RDATE:19480509T020000
-RDATE:19470511T020000
-RDATE:19460512T020000
-RDATE:19410511T000000
-RDATE:19400512T000000
-RDATE:19390514T000000
-RDATE:19380508T000000
-RDATE:19370509T000000
-RDATE:19360510T000000
-RDATE:19350505T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0330
-TZOFFSETTO:-0230
-TZNAME:NWT
-DTSTART:19450101T000000
-RDATE:19450101T000000
-RDATE:19440710T000000
-RDATE:19430530T000000
-RDATE:19420301T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0330
-TZNAME:NST
-DTSTART:19350330T000000
-RDATE:19350330T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0231
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:19341028T230000
-RDATE:19341028T230000
-RDATE:19331029T230000
-RDATE:19321030T230000
-RDATE:19311025T230000
-RDATE:19301026T230000
-RDATE:19291027T230000
-RDATE:19281028T230000
-RDATE:19271030T230000
-RDATE:19261031T230000
-RDATE:19251025T230000
-RDATE:19241026T230000
-RDATE:19231028T230000
-RDATE:19221029T230000
-RDATE:19211030T230000
-RDATE:19201031T230000
-RDATE:19190812T230000
-RDATE:19181031T020000
-RDATE:19170917T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0231
-TZNAME:NDT
-DTSTART:19340506T230000
-RDATE:19340506T230000
-RDATE:19330507T230000
-RDATE:19320501T230000
-RDATE:19310503T230000
-RDATE:19300504T230000
-RDATE:19290505T230000
-RDATE:19280506T230000
-RDATE:19270501T230000
-RDATE:19260502T230000
-RDATE:19250503T230000
-RDATE:19240504T230000
-RDATE:19230506T230000
-RDATE:19220507T230000
-RDATE:19210501T230000
-RDATE:19200502T230000
-RDATE:19190505T230000
-RDATE:19180414T020000
-RDATE:19170408T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0331
-TZOFFSETTO:-0331
-TZNAME:NST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Kitts.ics b/libical/zoneinfo/America/St_Kitts.ics
index d4dffd7d1b..28a7abdbd8 100644
--- a/libical/zoneinfo/America/St_Kitts.ics
+++ b/libical/zoneinfo/America/St_Kitts.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/St_Kitts
+TZID:/softwarestudio.org/Olson_20011030_4/America/St_Kitts
 X-LIC-LOCATION:America/St_Kitts
 BEGIN:STANDARD
-TZOFFSETFROM:-0411
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19120302T000000
-RDATE:19120302T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Lucia.ics b/libical/zoneinfo/America/St_Lucia.ics
index 32ae044af0..7cb74ad5a7 100644
--- a/libical/zoneinfo/America/St_Lucia.ics
+++ b/libical/zoneinfo/America/St_Lucia.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/St_Lucia
+TZID:/softwarestudio.org/Olson_20011030_5/America/St_Lucia
 X-LIC-LOCATION:America/St_Lucia
 BEGIN:STANDARD
-TZOFFSETFROM:-0404
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19120101T000000
-RDATE:19120101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0404
-TZOFFSETTO:-0404
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Thomas.ics b/libical/zoneinfo/America/St_Thomas.ics
index e0c39362b9..cb25228e24 100644
--- a/libical/zoneinfo/America/St_Thomas.ics
+++ b/libical/zoneinfo/America/St_Thomas.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/St_Thomas
+TZID:/softwarestudio.org/Olson_20011030_4/America/St_Thomas
 X-LIC-LOCATION:America/St_Thomas
 BEGIN:STANDARD
-TZOFFSETFROM:-0420
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/St_Vincent.ics b/libical/zoneinfo/America/St_Vincent.ics
index 829641665c..e6a576df27 100644
--- a/libical/zoneinfo/America/St_Vincent.ics
+++ b/libical/zoneinfo/America/St_Vincent.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/St_Vincent
+TZID:/softwarestudio.org/Olson_20011030_5/America/St_Vincent
 X-LIC-LOCATION:America/St_Vincent
 BEGIN:STANDARD
-TZOFFSETFROM:-0405
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19120101T000000
-RDATE:19120101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0405
-TZOFFSETTO:-0405
-TZNAME:KMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Swift_Current.ics b/libical/zoneinfo/America/Swift_Current.ics
index 3474e85d00..e30cf9719e 100644
--- a/libical/zoneinfo/America/Swift_Current.ics
+++ b/libical/zoneinfo/America/Swift_Current.ics
@@ -2,66 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Swift_Current
+TZID:/softwarestudio.org/Olson_20011030_5/America/Swift_Current
 X-LIC-LOCATION:America/Swift_Current
 BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19720430T020000
-RDATE:19720430T020000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19610924T020000
-RDATE:19610924T020000
-RDATE:19600925T020000
-RDATE:19591025T020000
-RDATE:19571027T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19461013T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19610430T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19570428T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19500101T000000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0711
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19050901T000000
-RDATE:19050901T000000
+TZNAME:CST
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Tegucigalpa.ics b/libical/zoneinfo/America/Tegucigalpa.ics
index 4adffd88ba..0fe1f166e4 100644
--- a/libical/zoneinfo/America/Tegucigalpa.ics
+++ b/libical/zoneinfo/America/Tegucigalpa.ics
@@ -2,30 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Tegucigalpa
+TZID:/softwarestudio.org/Olson_20011030_5/America/Tegucigalpa
 X-LIC-LOCATION:America/Tegucigalpa
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19880925T000000
-RDATE:19880925T000000
-RDATE:19870927T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19880501T000000
-RDATE:19880501T000000
-RDATE:19870503T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0549
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19210401T000000
-RDATE:19210401T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Thule.ics b/libical/zoneinfo/America/Thule.ics
index 5dd92adbbc..b71aa67139 100644
--- a/libical/zoneinfo/America/Thule.ics
+++ b/libical/zoneinfo/America/Thule.ics
@@ -2,42 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Thule
+TZID:/softwarestudio.org/Olson_20011030_5/America/Thule
 X-LIC-LOCATION:America/Thule
 BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:20001029T020000
-RDATE:20001029T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:20000402T020000
-RDATE:20000402T020000
-RDATE:19990404T020000
-RDATE:19980405T020000
-RDATE:19970406T020000
-RDATE:19960407T020000
-RDATE:19950402T020000
-RDATE:19940403T020000
-RDATE:19930404T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0435
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19160728T000000
-RDATE:19160728T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Thunder_Bay.ics b/libical/zoneinfo/America/Thunder_Bay.ics
index 737389a789..f32f60b2b5 100644
--- a/libical/zoneinfo/America/Thunder_Bay.ics
+++ b/libical/zoneinfo/America/Thunder_Bay.ics
@@ -2,78 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Thunder_Bay
+TZID:/softwarestudio.org/Olson_20011030_5/America/Thunder_Bay
 X-LIC-LOCATION:America/Thunder_Bay
 BEGIN:STANDARD
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0500
 TZNAME:EST
-DTSTART:19741027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0400
 TZNAME:EDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19740101T000000
-RDATE:19740101T000000
-RDATE:19730101T000000
-RDATE:19700101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:19721029T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0400
-TZNAME:EWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0557
-TZOFFSETTO:-0500
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Tijuana.ics b/libical/zoneinfo/America/Tijuana.ics
index 7d17bc6059..68e7268b79 100644
--- a/libical/zoneinfo/America/Tijuana.ics
+++ b/libical/zoneinfo/America/Tijuana.ics
@@ -2,97 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Tijuana
+TZID:/softwarestudio.org/Olson_20011030_5/America/Tijuana
 X-LIC-LOCATION:America/Tijuana
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19761031T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:20010101T000000
-RDATE:20010101T000000
-RDATE:19960101T000000
-RDATE:19760101T000000
-RDATE:19610101T000000
-RDATE:19540101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19480405T000000
-RDATE:19310401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19600925T020000
-RDATE:19600925T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19490114T000000
-RDATE:19451112T000000
-RDATE:19310930T000000
-RDATE:19301115T000000
-RDATE:19240101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420424T000000
-RDATE:19420424T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19270610T230000
-RDATE:19270610T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0748
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19220101T001156
-RDATE:19220101T001156
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Tortola.ics b/libical/zoneinfo/America/Tortola.ics
index 8af94543fd..d8ac5558e2 100644
--- a/libical/zoneinfo/America/Tortola.ics
+++ b/libical/zoneinfo/America/Tortola.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/America/Tortola
+TZID:/softwarestudio.org/Olson_20011030_4/America/Tortola
 X-LIC-LOCATION:America/Tortola
 BEGIN:STANDARD
-TZOFFSETFROM:-0418
+TZOFFSETFROM:-0400
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Vancouver.ics b/libical/zoneinfo/America/Vancouver.ics
index b23dced3b0..6173ce4c05 100644
--- a/libical/zoneinfo/America/Vancouver.ics
+++ b/libical/zoneinfo/America/Vancouver.ics
@@ -2,107 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Vancouver
+TZID:/softwarestudio.org/Olson_20011030_5/America/Vancouver
 X-LIC-LOCATION:America/Vancouver
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19621028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19650425T020000
-RDATE:19640426T020000
-RDATE:19630428T020000
-RDATE:19620429T020000
-RDATE:19610430T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500430T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460428T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19610924T020000
-RDATE:19610924T020000
-RDATE:19600925T020000
-RDATE:19590927T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500924T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19461013T020000
-RDATE:19450930T020000
-RDATE:19181031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0812
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Whitehorse.ics b/libical/zoneinfo/America/Whitehorse.ics
index 89f4a6b74e..d8bb411842 100644
--- a/libical/zoneinfo/America/Whitehorse.ics
+++ b/libical/zoneinfo/America/Whitehorse.ics
@@ -2,86 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Whitehorse
+TZID:/softwarestudio.org/Olson_20011030_5/America/Whitehorse
 X-LIC-LOCATION:America/Whitehorse
 BEGIN:STANDARD
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19801026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0700
 TZNAME:PDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0700
-TZNAME:PDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:PST
-DTSTART:19660701T020000
-RDATE:19660701T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0700
-TZNAME:YDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19190525T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19000820T000000
-RDATE:19000820T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Winnipeg.ics b/libical/zoneinfo/America/Winnipeg.ics
index 9ae5252b49..2d49a667fa 100644
--- a/libical/zoneinfo/America/Winnipeg.ics
+++ b/libical/zoneinfo/America/Winnipeg.ics
@@ -2,128 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Winnipeg
+TZID:/softwarestudio.org/Olson_20011030_5/America/Winnipeg
 X-LIC-LOCATION:America/Winnipeg
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:CDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:CST
-DTSTART:19871025T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:19861026T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671029T020000
-RDATE:19661030T020000
-RDATE:19630922T020000
-RDATE:19600925T020000
-RDATE:19591025T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19560930T020000
-RDATE:19550925T020000
-RDATE:19540926T020000
-RDATE:19530927T020000
-RDATE:19520928T020000
-RDATE:19510930T020000
-RDATE:19500930T020000
-RDATE:19490925T020000
-RDATE:19480926T020000
-RDATE:19470928T020000
-RDATE:19461013T020000
-RDATE:19450930T020000
-RDATE:19370926T020000
-RDATE:19181031T020000
-RDATE:19160917T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-RDATE:19680428T020000
-RDATE:19670430T020000
-RDATE:19660424T020000
-RDATE:19630428T020000
-RDATE:19600424T020000
-RDATE:19590426T020000
-RDATE:19580427T020000
-RDATE:19570428T020000
-RDATE:19560429T020000
-RDATE:19550424T020000
-RDATE:19540425T020000
-RDATE:19530426T020000
-RDATE:19520427T020000
-RDATE:19510429T020000
-RDATE:19500501T020000
-RDATE:19490424T020000
-RDATE:19480425T020000
-RDATE:19470427T020000
-RDATE:19460512T020000
-RDATE:19370516T020000
-RDATE:19180414T020000
-RDATE:19160423T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:CWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0629
-TZOFFSETTO:-0600
-TZNAME:CST
-DTSTART:18870716T000000
-RDATE:18870716T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Yakutat.ics b/libical/zoneinfo/America/Yakutat.ics
index 3728d1710c..9beccdf685 100644
--- a/libical/zoneinfo/America/Yakutat.ics
+++ b/libical/zoneinfo/America/Yakutat.ics
@@ -2,109 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Yakutat
+TZID:/softwarestudio.org/Olson_20011030_5/America/Yakutat
 X-LIC-LOCATION:America/Yakutat
 BEGIN:STANDARD
 TZOFFSETFROM:-0800
 TZOFFSETTO:-0900
 TZNAME:AKST
-DTSTART:19831030T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0800
 TZNAME:AKDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:AKDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YDT
-DTSTART:19830424T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750223T020000
-RDATE:19740106T020000
-RDATE:19730429T020000
-RDATE:19720430T020000
-RDATE:19710425T020000
-RDATE:19700426T020000
-RDATE:19690427T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19821031T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19450930T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19690101T000000
-RDATE:19690101T000000
-RDATE:19460101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0800
-TZOFFSETTO:-0800
-TZNAME:YPT
-DTSTART:19450814T150000
-RDATE:19450814T150000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0900
-TZOFFSETTO:-0800
-TZNAME:YWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0919
-TZOFFSETTO:-0900
-TZNAME:YST
-DTSTART:19000820T120000
-RDATE:19000820T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1441
-TZOFFSETTO:-0919
-TZNAME:LMT
-DTSTART:18671018T000000
-RDATE:18671018T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/America/Yellowknife.ics b/libical/zoneinfo/America/Yellowknife.ics
index 7a09cacdaa..b65fcbfae4 100644
--- a/libical/zoneinfo/America/Yellowknife.ics
+++ b/libical/zoneinfo/America/Yellowknife.ics
@@ -2,73 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/America/Yellowknife
+TZID:/softwarestudio.org/Olson_20011030_5/America/Yellowknife
 X-LIC-LOCATION:America/Yellowknife
 BEGIN:STANDARD
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0700
 TZNAME:MST
-DTSTART:19801026T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0700
 TZOFFSETTO:-0600
 TZNAME:MDT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MDT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19190525T020000
-RDATE:19180414T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19651031T020000
-RDATE:19651031T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0500
-TZNAME:MDDT
-DTSTART:19650425T000000
-RDATE:19650425T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19191101T000000
-RDATE:19181027T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:MWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0737
-TZOFFSETTO:-0700
-TZNAME:MST
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Casey.ics b/libical/zoneinfo/Antarctica/Casey.ics
index e0d55d1497..e59048da6a 100644
--- a/libical/zoneinfo/Antarctica/Casey.ics
+++ b/libical/zoneinfo/Antarctica/Casey.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Antarctica/Casey
+TZID:/softwarestudio.org/Olson_20011030_4/Antarctica/Casey
 X-LIC-LOCATION:Antarctica/Casey
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:WST
-DTSTART:19690101T000000
-RDATE:19690101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Davis.ics b/libical/zoneinfo/Antarctica/Davis.ics
index 95ae63c35f..e14b6f1d22 100644
--- a/libical/zoneinfo/Antarctica/Davis.ics
+++ b/libical/zoneinfo/Antarctica/Davis.ics
@@ -2,22 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Antarctica/Davis
+TZID:/softwarestudio.org/Olson_20011030_5/Antarctica/Davis
 X-LIC-LOCATION:Antarctica/Davis
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0700
 TZOFFSETTO:+0700
 TZNAME:DAVT
-DTSTART:19690201T000000
-RDATE:19690201T000000
-RDATE:19570113T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0000
-TZNAME:zzz
-DTSTART:19641101T000000
-RDATE:19641101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/DumontDUrville.ics b/libical/zoneinfo/Antarctica/DumontDUrville.ics
index b485cf5829..f80c873c42 100644
--- a/libical/zoneinfo/Antarctica/DumontDUrville.ics
+++ b/libical/zoneinfo/Antarctica/DumontDUrville.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Antarctica/DumontDUrville
+TZID:/softwarestudio.org/Olson_20011030_5/Antarctica/DumontDUrville
 X-LIC-LOCATION:Antarctica/DumontDUrville
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+1000
-TZNAME:DDUT
-DTSTART:19561101T000000
-RDATE:19561101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+1000
-TZOFFSETTO:+0000
-TZNAME:zzz
-DTSTART:19520114T000000
-RDATE:19520114T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
 TZOFFSETTO:+1000
-TZNAME:PMT
-DTSTART:19470101T000000
-RDATE:19470101T000000
+TZNAME:DDUT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Mawson.ics b/libical/zoneinfo/Antarctica/Mawson.ics
index 95d03c89a1..72550a0753 100644
--- a/libical/zoneinfo/Antarctica/Mawson.ics
+++ b/libical/zoneinfo/Antarctica/Mawson.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Antarctica/Mawson
+TZID:/softwarestudio.org/Olson_20011030_4/Antarctica/Mawson
 X-LIC-LOCATION:Antarctica/Mawson
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0600
 TZOFFSETTO:+0600
 TZNAME:MAWT
-DTSTART:19540213T000000
-RDATE:19540213T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/McMurdo.ics b/libical/zoneinfo/Antarctica/McMurdo.ics
index c2b2ae83e1..1fadf8c5c9 100644
--- a/libical/zoneinfo/Antarctica/McMurdo.ics
+++ b/libical/zoneinfo/Antarctica/McMurdo.ics
@@ -2,71 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Antarctica/McMurdo
+TZID:/softwarestudio.org/Olson_20011030_5/Antarctica/McMurdo
 X-LIC-LOCATION:Antarctica/McMurdo
 BEGIN:STANDARD
 TZOFFSETFROM:+1300
 TZOFFSETTO:+1200
 TZNAME:NZST
-DTSTART:19900318T030000
+DTSTART:19700315T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=3SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1300
 TZNAME:NZDT
-DTSTART:19901007T020000
+DTSTART:19701004T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:NZDT
-DTSTART:19891008T020000
-RDATE:19891008T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741103T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19890305T030000
-RDATE:19890305T030000
-RDATE:19880306T030000
-RDATE:19870301T030000
-RDATE:19860302T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820307T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750223T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19560101T000000
-RDATE:19560101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Palmer.ics b/libical/zoneinfo/Antarctica/Palmer.ics
index 555240bdb6..5134760c01 100644
--- a/libical/zoneinfo/Antarctica/Palmer.ics
+++ b/libical/zoneinfo/Antarctica/Palmer.ics
@@ -2,123 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Antarctica/Palmer
+TZID:/softwarestudio.org/Olson_20011030_5/Antarctica/Palmer
 X-LIC-LOCATION:Antarctica/Palmer
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:CLST
-DTSTART:19991010T000000
+DTSTART:19701011T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:CLT
-DTSTART:20000312T000000
+DTSTART:19700315T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:CLT
-DTSTART:19990404T000000
-RDATE:19990404T000000
-RDATE:19980315T000000
-RDATE:19970309T000000
-RDATE:19960310T000000
-RDATE:19950312T000000
-RDATE:19940313T000000
-RDATE:19930314T000000
-RDATE:19920315T000000
-RDATE:19910310T000000
-RDATE:19900311T000000
-RDATE:19890312T000000
-RDATE:19880313T000000
-RDATE:19870315T000000
-RDATE:19860309T000000
-RDATE:19850310T000000
-RDATE:19840311T000000
-RDATE:19830313T000000
-RDATE:19820501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:CLST
-DTSTART:19980927T000000
-RDATE:19980927T000000
-RDATE:19971012T000000
-RDATE:19961013T000000
-RDATE:19951015T000000
-RDATE:19941009T000000
-RDATE:19931010T000000
-RDATE:19921011T000000
-RDATE:19911013T000000
-RDATE:19901014T000000
-RDATE:19891015T000000
-RDATE:19881009T000000
-RDATE:19871011T000000
-RDATE:19861012T000000
-RDATE:19851013T000000
-RDATE:19841014T000000
-RDATE:19831009T000000
-RDATE:19821010T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19770403T000000
-RDATE:19770403T000000
-RDATE:19760404T000000
-RDATE:19750406T000000
-RDATE:19740501T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:ARST
-DTSTART:19761003T000000
-RDATE:19761003T000000
-RDATE:19751005T000000
-RDATE:19741006T000000
-RDATE:19740123T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ART
-DTSTART:19691005T000000
-RDATE:19691005T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:ART
-DTSTART:19690406T000000
-RDATE:19690406T000000
-RDATE:19680407T000000
-RDATE:19670401T000000
-RDATE:19660301T000000
-RDATE:19650301T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19681006T000000
-RDATE:19681006T000000
-RDATE:19671001T000000
-RDATE:19661015T000000
-RDATE:19651015T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0300
-TZNAME:ARST
-DTSTART:19650101T000000
-RDATE:19650101T000000
-END:DAYLIGHT
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/South_Pole.ics b/libical/zoneinfo/Antarctica/South_Pole.ics
index ea1427afb2..f72cc8d854 100644
--- a/libical/zoneinfo/Antarctica/South_Pole.ics
+++ b/libical/zoneinfo/Antarctica/South_Pole.ics
@@ -2,71 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Antarctica/South_Pole
+TZID:/softwarestudio.org/Olson_20011030_5/Antarctica/South_Pole
 X-LIC-LOCATION:Antarctica/South_Pole
 BEGIN:STANDARD
 TZOFFSETFROM:+1300
 TZOFFSETTO:+1200
 TZNAME:NZST
-DTSTART:19900318T030000
+DTSTART:19700315T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=3SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1300
 TZNAME:NZDT
-DTSTART:19901007T020000
+DTSTART:19701004T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:NZDT
-DTSTART:19891008T020000
-RDATE:19891008T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741103T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19890305T030000
-RDATE:19890305T030000
-RDATE:19880306T030000
-RDATE:19870301T030000
-RDATE:19860302T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820307T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750223T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19560101T000000
-RDATE:19560101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Syowa.ics b/libical/zoneinfo/Antarctica/Syowa.ics
index 5999970728..537a50f4d1 100644
--- a/libical/zoneinfo/Antarctica/Syowa.ics
+++ b/libical/zoneinfo/Antarctica/Syowa.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Antarctica/Syowa
+TZID:/softwarestudio.org/Olson_20011030_4/Antarctica/Syowa
 X-LIC-LOCATION:Antarctica/Syowa
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:SYOT
-DTSTART:19570129T000000
-RDATE:19570129T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Antarctica/Vostok.ics b/libical/zoneinfo/Antarctica/Vostok.ics
index c78d9cca5d..7d27fbdc10 100644
--- a/libical/zoneinfo/Antarctica/Vostok.ics
+++ b/libical/zoneinfo/Antarctica/Vostok.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Antarctica/Vostok
+TZID:/softwarestudio.org/Olson_20011030_4/Antarctica/Vostok
 X-LIC-LOCATION:Antarctica/Vostok
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0600
 TZOFFSETTO:+0600
 TZNAME:VOST
-DTSTART:19571216T000000
-RDATE:19571216T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Arctic/Longyearbyen.ics b/libical/zoneinfo/Arctic/Longyearbyen.ics
index 1f0ca1c9a2..eaaeb214e9 100644
--- a/libical/zoneinfo/Arctic/Longyearbyen.ics
+++ b/libical/zoneinfo/Arctic/Longyearbyen.ics
@@ -2,88 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Arctic/Longyearbyen
+TZID:/softwarestudio.org/Olson_20011030_5/Arctic/Longyearbyen
 X-LIC-LOCATION:Arctic/Longyearbyen
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19650919T030000
-RDATE:19640920T030000
-RDATE:19630915T030000
-RDATE:19620916T030000
-RDATE:19610917T030000
-RDATE:19600918T030000
-RDATE:19590920T030000
-RDATE:19451001T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19160930T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19650425T020000
-RDATE:19640315T020000
-RDATE:19630317T020000
-RDATE:19620318T020000
-RDATE:19610319T020000
-RDATE:19600320T020000
-RDATE:19590315T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400810T230000
-RDATE:19160522T010000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0043
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Aden.ics b/libical/zoneinfo/Asia/Aden.ics
index e683a4b908..e886859b81 100644
--- a/libical/zoneinfo/Asia/Aden.ics
+++ b/libical/zoneinfo/Asia/Aden.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Asia/Aden
+TZID:/softwarestudio.org/Olson_20011030_4/Asia/Aden
 X-LIC-LOCATION:Asia/Aden
 BEGIN:STANDARD
-TZOFFSETFROM:+0301
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19500101T000000
-RDATE:19500101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Almaty.ics b/libical/zoneinfo/Asia/Almaty.ics
index 32db2fb23a..89ea0d4a2e 100644
--- a/libical/zoneinfo/Asia/Almaty.ics
+++ b/libical/zoneinfo/Asia/Almaty.ics
@@ -2,86 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Almaty
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Almaty
 X-LIC-LOCATION:Asia/Almaty
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0700
 TZNAME:ALMST
-DTSTART:19920329T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0700
 TZOFFSETTO:+0600
 TZNAME:ALMT
-DTSTART:19961027T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:ALMT
-DTSTART:19950924T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:ALMT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:ALMT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:ALMST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:ALMST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0508
-TZOFFSETTO:+0500
-TZNAME:ALMT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Amman.ics b/libical/zoneinfo/Asia/Amman.ics
index 1613e7e681..7078aeaf32 100644
--- a/libical/zoneinfo/Asia/Amman.ics
+++ b/libical/zoneinfo/Asia/Amman.ics
@@ -2,81 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Amman
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Amman
 X-LIC-LOCATION:Asia/Amman
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19990930T010000
+DTSTART:19700924T010000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=-1TH
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:20000330T000000
+DTSTART:19700326T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1TH
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19990701T000000
-RDATE:19990701T000000
-RDATE:19980403T000000
-RDATE:19970404T000000
-RDATE:19960405T000000
-RDATE:19950407T000000
-RDATE:19940401T000000
-RDATE:19930402T000000
-RDATE:19920410T000000
-RDATE:19910417T000000
-RDATE:19900427T000000
-RDATE:19890508T000000
-RDATE:19880401T000000
-RDATE:19870403T000000
-RDATE:19860404T000000
-RDATE:19850401T000000
-RDATE:19780430T000000
-RDATE:19770501T000000
-RDATE:19760501T000000
-RDATE:19750501T000000
-RDATE:19740501T000000
-RDATE:19730606T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19980918T010000
-RDATE:19980918T010000
-RDATE:19970919T010000
-RDATE:19960920T010000
-RDATE:19950915T010000
-RDATE:19940916T000000
-RDATE:19931001T000000
-RDATE:19921002T000000
-RDATE:19910927T000000
-RDATE:19901005T000000
-RDATE:19891006T000000
-RDATE:19881007T000000
-RDATE:19871002T000000
-RDATE:19861003T000000
-RDATE:19851001T000000
-RDATE:19780930T000000
-RDATE:19771001T000000
-RDATE:19761101T000000
-RDATE:19751001T000000
-RDATE:19741001T000000
-RDATE:19731001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0224
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19310101T000000
-RDATE:19310101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Anadyr.ics b/libical/zoneinfo/Asia/Anadyr.ics
index 716f17be9b..660b7e900a 100644
--- a/libical/zoneinfo/Asia/Anadyr.ics
+++ b/libical/zoneinfo/Asia/Anadyr.ics
@@ -2,111 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Anadyr
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Anadyr
 X-LIC-LOCATION:Asia/Anadyr
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1300
 TZNAME:ANAST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1300
 TZOFFSETTO:+1200
 TZNAME:ANAT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:ANAT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:ANAST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:ANAT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:ANAT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1200
-TZNAME:ANAST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1300
-TZNAME:ANAST
-DTSTART:19820401T000000
-RDATE:19820401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1400
-TZOFFSETTO:+1300
-TZNAME:ANAT
-DTSTART:19811001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1400
-TZNAME:ANAST
-DTSTART:19810401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:ANAT
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1150
-TZOFFSETTO:+1200
-TZNAME:ANAT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Aqtau.ics b/libical/zoneinfo/Asia/Aqtau.ics
index 93a9462cc8..9981df52b5 100644
--- a/libical/zoneinfo/Asia/Aqtau.ics
+++ b/libical/zoneinfo/Asia/Aqtau.ics
@@ -2,114 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Aqtau
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Aqtau
 X-LIC-LOCATION:Asia/Aqtau
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0500
 TZNAME:AQTST
-DTSTART:19960331T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0400
 TZNAME:AQTT
-DTSTART:19961027T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0400
-TZNAME:AQTT
-DTSTART:19950924T000000
-RDATE:19950924T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:AQTST
-DTSTART:19950326T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:AQTT
-DTSTART:19940925T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:AQTT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:AQTT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0500
-TZNAME:AQTST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:SHET
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:SHEST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:SHET
-DTSTART:19570301T000000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0321
-TZOFFSETTO:+0400
-TZNAME:SHET
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Aqtobe.ics b/libical/zoneinfo/Asia/Aqtobe.ics
index f56a74db08..be7b7f08f2 100644
--- a/libical/zoneinfo/Asia/Aqtobe.ics
+++ b/libical/zoneinfo/Asia/Aqtobe.ics
@@ -2,98 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Aqtobe
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Aqtobe
 X-LIC-LOCATION:Asia/Aqtobe
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0600
 TZNAME:AQTST
-DTSTART:19920329T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0500
 TZNAME:AQTT
-DTSTART:19961027T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:AQTT
-DTSTART:19950924T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:AQTT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:AQTT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0500
-TZNAME:AKTST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:AKT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:AKST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:AKT
-DTSTART:19570301T000000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0349
-TZOFFSETTO:+0400
-TZNAME:AKT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Ashgabat.ics b/libical/zoneinfo/Asia/Ashgabat.ics
index d6d46669c1..0238843de9 100644
--- a/libical/zoneinfo/Asia/Ashgabat.ics
+++ b/libical/zoneinfo/Asia/Ashgabat.ics
@@ -2,81 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Ashgabat
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Ashgabat
 X-LIC-LOCATION:Asia/Ashgabat
 BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:TMT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:TMT
-DTSTART:19911027T000000
-RDATE:19911027T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:ASHT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
-TZNAME:ASHST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:ASHT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:ASHST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:ASHT
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0354
-TZOFFSETTO:+0400
-TZNAME:ASHT
-DTSTART:19240502T000000
-RDATE:19240502T000000
+TZNAME:TMT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Baghdad.ics b/libical/zoneinfo/Asia/Baghdad.ics
index ccf5566211..f64c7e3bb3 100644
--- a/libical/zoneinfo/Asia/Baghdad.ics
+++ b/libical/zoneinfo/Asia/Baghdad.ics
@@ -2,65 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Baghdad
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Baghdad
 X-LIC-LOCATION:Asia/Baghdad
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0400
 TZNAME:ADT
-DTSTART:19910401T030000
+DTSTART:19700401T030000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19911001T040000
+DTSTART:19701001T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:AST
-DTSTART:19900930T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19841001T000000
-RDATE:19831001T000000
-RDATE:19821001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:ADT
-DTSTART:19900325T010000
-RDATE:19900325T010000
-RDATE:19890326T010000
-RDATE:19880327T010000
-RDATE:19870329T010000
-RDATE:19860330T010000
-RDATE:19850401T000000
-RDATE:19840401T000000
-RDATE:19830331T000000
-RDATE:19820501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0258
-TZOFFSETTO:+0300
-TZNAME:AST
-DTSTART:19180101T000000
-RDATE:19180101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0258
-TZOFFSETTO:+0258
-TZNAME:BMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Bahrain.ics b/libical/zoneinfo/Asia/Bahrain.ics
index 3b4d579088..e76aa520b1 100644
--- a/libical/zoneinfo/Asia/Bahrain.ics
+++ b/libical/zoneinfo/Asia/Bahrain.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Bahrain
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Bahrain
 X-LIC-LOCATION:Asia/Bahrain
 BEGIN:STANDARD
-TZOFFSETFROM:+0400
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19720601T000000
-RDATE:19720601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0322
-TZOFFSETTO:+0400
-TZNAME:GST
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Baku.ics b/libical/zoneinfo/Asia/Baku.ics
index 7a7f0ec3ed..520060956e 100644
--- a/libical/zoneinfo/Asia/Baku.ics
+++ b/libical/zoneinfo/Asia/Baku.ics
@@ -2,131 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Baku
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Baku
 X-LIC-LOCATION:Asia/Baku
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0500
 TZNAME:AZST
-DTSTART:19970330T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0400
 TZNAME:AZT
-DTSTART:19971026T010000
+DTSTART:19701025T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:AZT
-DTSTART:19970101T000000
-RDATE:19970101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:AZT
-DTSTART:19961027T060000
-RDATE:19961027T060000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0500
-TZNAME:AZST
-DTSTART:19960331T060000
-RDATE:19960331T060000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:AZST
-DTSTART:19960101T000000
-RDATE:19960101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:AZT
-DTSTART:19920927T020000
-RDATE:19920927T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:AZT
-DTSTART:19920926T230000
-RDATE:19920926T230000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:AZST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:AZST
-DTSTART:19910830T000000
-RDATE:19910830T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:BAKST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:BAKT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:BAKST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:BAKT
-DTSTART:19570301T000000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0319
-TZOFFSETTO:+0300
-TZNAME:BAKT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Bangkok.ics b/libical/zoneinfo/Asia/Bangkok.ics
index 1cc36c9695..9ebeb3fe7b 100644
--- a/libical/zoneinfo/Asia/Bangkok.ics
+++ b/libical/zoneinfo/Asia/Bangkok.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Bangkok
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Bangkok
 X-LIC-LOCATION:Asia/Bangkok
 BEGIN:STANDARD
-TZOFFSETFROM:+0642
+TZOFFSETFROM:+0700
 TZOFFSETTO:+0700
 TZNAME:ICT
-DTSTART:19200401T000000
-RDATE:19200401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0642
-TZOFFSETTO:+0642
-TZNAME:BMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Beirut.ics b/libical/zoneinfo/Asia/Beirut.ics
index 1ee7d907bb..d9c16f1f86 100644
--- a/libical/zoneinfo/Asia/Beirut.ics
+++ b/libical/zoneinfo/Asia/Beirut.ics
@@ -2,96 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Beirut
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Beirut
 X-LIC-LOCATION:Asia/Beirut
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19930328T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19991031T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19980927T000000
-RDATE:19980927T000000
-RDATE:19970928T000000
-RDATE:19960929T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19921004T000000
-RDATE:19911016T000000
-RDATE:19901016T000000
-RDATE:19891016T000000
-RDATE:19881016T000000
-RDATE:19871016T000000
-RDATE:19861016T000000
-RDATE:19851016T000000
-RDATE:19841016T000000
-RDATE:19780930T000000
-RDATE:19771001T000000
-RDATE:19761001T000000
-RDATE:19751001T000000
-RDATE:19741001T000000
-RDATE:19731001T000000
-RDATE:19721001T000000
-RDATE:19611001T000000
-RDATE:19601001T000000
-RDATE:19591001T000000
-RDATE:19581001T000000
-RDATE:19571001T000000
-RDATE:19230916T000000
-RDATE:19221008T000000
-RDATE:19211003T000000
-RDATE:19201025T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19920501T000000
-RDATE:19920501T000000
-RDATE:19910501T000000
-RDATE:19900501T000000
-RDATE:19890510T000000
-RDATE:19880601T000000
-RDATE:19870501T000000
-RDATE:19860501T000000
-RDATE:19850501T000000
-RDATE:19840501T000000
-RDATE:19780430T000000
-RDATE:19770501T000000
-RDATE:19760501T000000
-RDATE:19750501T000000
-RDATE:19740501T000000
-RDATE:19730501T000000
-RDATE:19720622T000000
-RDATE:19610501T000000
-RDATE:19600501T000000
-RDATE:19590501T000000
-RDATE:19580501T000000
-RDATE:19570501T000000
-RDATE:19230422T000000
-RDATE:19220326T000000
-RDATE:19210403T000000
-RDATE:19200328T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0222
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Bishkek.ics b/libical/zoneinfo/Asia/Bishkek.ics
index e78ea1aefe..f5427a1eca 100644
--- a/libical/zoneinfo/Asia/Bishkek.ics
+++ b/libical/zoneinfo/Asia/Bishkek.ics
@@ -2,97 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Bishkek
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Bishkek
 X-LIC-LOCATION:Asia/Bishkek
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0600
 TZNAME:KGST
-DTSTART:19970330T023000
+DTSTART:19700329T023000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0500
 TZNAME:KGT
-DTSTART:19971026T023000
+DTSTART:19701025T023000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:KGT
-DTSTART:19960929T000000
-RDATE:19960929T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910831T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:KGST
-DTSTART:19960407T000000
-RDATE:19960407T000000
-RDATE:19950409T000000
-RDATE:19940410T000000
-RDATE:19930411T000000
-RDATE:19920412T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:FRUST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:FRUT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:FRUST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:FRUT
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0458
-TZOFFSETTO:+0500
-TZNAME:FRUT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Brunei.ics b/libical/zoneinfo/Asia/Brunei.ics
index 178cf61f93..4cc8a9dde1 100644
--- a/libical/zoneinfo/Asia/Brunei.ics
+++ b/libical/zoneinfo/Asia/Brunei.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Brunei
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Brunei
 X-LIC-LOCATION:Asia/Brunei
 BEGIN:STANDARD
-TZOFFSETFROM:+0730
+TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:BNT
-DTSTART:19330101T000000
-RDATE:19330101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0740
-TZOFFSETTO:+0730
-TZNAME:BNT
-DTSTART:19260301T000000
-RDATE:19260301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Calcutta.ics b/libical/zoneinfo/Asia/Calcutta.ics
index a71ed2fb21..21b3e6c390 100644
--- a/libical/zoneinfo/Asia/Calcutta.ics
+++ b/libical/zoneinfo/Asia/Calcutta.ics
@@ -2,36 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Calcutta
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Calcutta
 X-LIC-LOCATION:Asia/Calcutta
 BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19451015T000000
-RDATE:19451015T000000
-RDATE:19420515T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0530
-TZOFFSETTO:+0630
+TZOFFSETTO:+0530
 TZNAME:IST
-DTSTART:19420901T000000
-RDATE:19420901T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0553
-TZOFFSETTO:+0630
-TZNAME:BURT
-DTSTART:19411001T000000
-RDATE:19411001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0553
-TZOFFSETTO:+0553
-TZNAME:HMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Choibalsan.ics b/libical/zoneinfo/Asia/Choibalsan.ics
index ea3db53767..bd0e4502bd 100644
--- a/libical/zoneinfo/Asia/Choibalsan.ics
+++ b/libical/zoneinfo/Asia/Choibalsan.ics
@@ -2,73 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_1/Asia/Choibalsan
+TZID:/softwarestudio.org/Olson_20011030_2/Asia/Choibalsan
 X-LIC-LOCATION:Asia/Choibalsan
 BEGIN:STANDARD
-TZOFFSETFROM:+1000
+TZOFFSETFROM:+0900
 TZOFFSETTO:+0900
 TZNAME:CHOT
-DTSTART:20010928T030000
-RDATE:20010928T030000
-RDATE:19980927T030000
-RDATE:19970928T030000
-RDATE:19960929T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1000
-TZNAME:CHOST
-DTSTART:20010427T020000
-RDATE:20010427T020000
-RDATE:19980329T020000
-RDATE:19970330T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-RDATE:19910331T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+1000
-TZNAME:CHOST
-DTSTART:19830401T000000
-RDATE:19830401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:ULAT
-DTSTART:19780101T000000
-RDATE:19780101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0738
-TZOFFSETTO:+0700
-TZNAME:ULAT
-DTSTART:19050801T000000
-RDATE:19050801T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Chongqing.ics b/libical/zoneinfo/Asia/Chongqing.ics
index 5c3dca4a2e..f98b6872d4 100644
--- a/libical/zoneinfo/Asia/Chongqing.ics
+++ b/libical/zoneinfo/Asia/Chongqing.ics
@@ -2,45 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_1/Asia/Chongqing
+TZID:/softwarestudio.org/Olson_20011030_2/Asia/Chongqing
 X-LIC-LOCATION:Asia/Chongqing
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19910915T000000
-RDATE:19910915T000000
-RDATE:19900916T000000
-RDATE:19890917T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19910414T000000
-RDATE:19910414T000000
-RDATE:19900415T000000
-RDATE:19890416T000000
-RDATE:19880410T000000
-RDATE:19870412T000000
-RDATE:19860504T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19800501T000000
-RDATE:19800501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0706
-TZOFFSETTO:+0700
-TZNAME:CHUT
-DTSTART:19280101T000000
-RDATE:19280101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Colombo.ics b/libical/zoneinfo/Asia/Colombo.ics
index 4708ea16fe..9595517df3 100644
--- a/libical/zoneinfo/Asia/Colombo.ics
+++ b/libical/zoneinfo/Asia/Colombo.ics
@@ -2,56 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Colombo
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Colombo
 X-LIC-LOCATION:Asia/Colombo
 BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0600
-TZNAME:LKT
-DTSTART:19961026T003000
-RDATE:19961026T003000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0530
-TZOFFSETTO:+0630
-TZNAME:LKT
-DTSTART:19960525T000000
-RDATE:19960525T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19451016T020000
-RDATE:19451016T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0600
-TZOFFSETTO:+0630
-TZNAME:IST
-DTSTART:19420901T000000
-RDATE:19420901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0530
 TZOFFSETTO:+0600
-TZNAME:IHST
-DTSTART:19420105T000000
-RDATE:19420105T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0520
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19060101T000000
-RDATE:19060101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0519
-TZOFFSETTO:+0520
-TZNAME:MMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+TZNAME:LKT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Damascus.ics b/libical/zoneinfo/Asia/Damascus.ics
index cebcd5f6ab..42f808b839 100644
--- a/libical/zoneinfo/Asia/Damascus.ics
+++ b/libical/zoneinfo/Asia/Damascus.ics
@@ -2,107 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Damascus
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Damascus
 X-LIC-LOCATION:Asia/Damascus
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19941001T000000
+DTSTART:19701001T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19990401T000000
+DTSTART:19700401T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980330T000000
-RDATE:19980330T000000
-RDATE:19970331T000000
-RDATE:19960401T000000
-RDATE:19950401T000000
-RDATE:19940401T000000
-RDATE:19930326T000000
-RDATE:19920408T000000
-RDATE:19910401T000000
-RDATE:19900401T020000
-RDATE:19890331T020000
-RDATE:19880315T020000
-RDATE:19870301T020000
-RDATE:19860216T020000
-RDATE:19840409T020000
-RDATE:19830409T020000
-RDATE:19780501T020000
-RDATE:19770501T020000
-RDATE:19760501T020000
-RDATE:19750501T020000
-RDATE:19740501T020000
-RDATE:19730501T020000
-RDATE:19720501T020000
-RDATE:19710501T020000
-RDATE:19700501T020000
-RDATE:19690501T020000
-RDATE:19680501T020000
-RDATE:19670501T020000
-RDATE:19660424T020000
-RDATE:19650501T020000
-RDATE:19640501T020000
-RDATE:19630501T020000
-RDATE:19620429T020000
-RDATE:19230415T020000
-RDATE:19220416T020000
-RDATE:19210417T020000
-RDATE:19200418T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19930925T000000
-RDATE:19930925T000000
-RDATE:19921001T000000
-RDATE:19911001T000000
-RDATE:19900930T020000
-RDATE:19891001T020000
-RDATE:19881031T020000
-RDATE:19871031T020000
-RDATE:19861009T020000
-RDATE:19841001T020000
-RDATE:19831001T020000
-RDATE:19780901T020000
-RDATE:19770901T020000
-RDATE:19761001T020000
-RDATE:19751001T020000
-RDATE:19741001T020000
-RDATE:19731001T020000
-RDATE:19721001T020000
-RDATE:19711001T020000
-RDATE:19701001T020000
-RDATE:19691001T020000
-RDATE:19681001T020000
-RDATE:19671001T020000
-RDATE:19661001T020000
-RDATE:19650930T020000
-RDATE:19641001T020000
-RDATE:19630930T020000
-RDATE:19621001T020000
-RDATE:19231007T020000
-RDATE:19221001T020000
-RDATE:19211002T020000
-RDATE:19201003T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0225
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19200101T000000
-RDATE:19200101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Dhaka.ics b/libical/zoneinfo/Asia/Dhaka.ics
index 01ba5f8092..1f0a43d433 100644
--- a/libical/zoneinfo/Asia/Dhaka.ics
+++ b/libical/zoneinfo/Asia/Dhaka.ics
@@ -2,49 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Dhaka
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Dhaka
 X-LIC-LOCATION:Asia/Dhaka
 BEGIN:STANDARD
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0600
 TZNAME:BDT
-DTSTART:19710326T000000
-RDATE:19710326T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0600
-TZNAME:DACT
-DTSTART:19510930T000000
-RDATE:19510930T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0530
-TZOFFSETTO:+0630
-TZNAME:BURT
-DTSTART:19420901T000000
-RDATE:19420901T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19420515T000000
-RDATE:19420515T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0553
-TZOFFSETTO:+0630
-TZNAME:BURT
-DTSTART:19411001T000000
-RDATE:19411001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0602
-TZOFFSETTO:+0553
-TZNAME:HMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Dili.ics b/libical/zoneinfo/Asia/Dili.ics
index f1deedd03a..7777dd3c20 100644
--- a/libical/zoneinfo/Asia/Dili.ics
+++ b/libical/zoneinfo/Asia/Dili.ics
@@ -2,42 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Dili
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Dili
 X-LIC-LOCATION:Asia/Dili
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:TPT
-DTSTART:20000917T000000
-RDATE:20000917T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CIT
-DTSTART:19760503T000000
-RDATE:19760503T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0900
 TZOFFSETTO:+0900
 TZNAME:TPT
-DTSTART:19450801T000000
-RDATE:19450801T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420221T230000
-RDATE:19420221T230000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0822
-TZOFFSETTO:+0800
-TZNAME:TPT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Dubai.ics b/libical/zoneinfo/Asia/Dubai.ics
index 3382004b71..334683ca62 100644
--- a/libical/zoneinfo/Asia/Dubai.ics
+++ b/libical/zoneinfo/Asia/Dubai.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Asia/Dubai
+TZID:/softwarestudio.org/Olson_20011030_4/Asia/Dubai
 X-LIC-LOCATION:Asia/Dubai
 BEGIN:STANDARD
-TZOFFSETFROM:+0341
+TZOFFSETFROM:+0400
 TZOFFSETTO:+0400
 TZNAME:GST
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Dushanbe.ics b/libical/zoneinfo/Asia/Dushanbe.ics
index 3c1d520d58..eed13ce5f9 100644
--- a/libical/zoneinfo/Asia/Dushanbe.ics
+++ b/libical/zoneinfo/Asia/Dushanbe.ics
@@ -2,67 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Dushanbe
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Dushanbe
 X-LIC-LOCATION:Asia/Dushanbe
 BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:TJT
-DTSTART:19910909T030000
-RDATE:19910909T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:DUSST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:DUST
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:DUSST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:DUST
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0435
 TZOFFSETTO:+0500
-TZNAME:DUST
-DTSTART:19240502T000000
-RDATE:19240502T000000
+TZNAME:TJT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Gaza.ics b/libical/zoneinfo/Asia/Gaza.ics
index af6869b55b..3b9392dfe5 100644
--- a/libical/zoneinfo/Asia/Gaza.ics
+++ b/libical/zoneinfo/Asia/Gaza.ics
@@ -2,131 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Gaza
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Gaza
 X-LIC-LOCATION:Asia/Gaza
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19990416T000000
+DTSTART:19700417T000000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=3FR
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19991015T000000
+DTSTART:19701016T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=3FR
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19990101T000000
-RDATE:19990101T000000
-RDATE:19960101T000000
-RDATE:19480515T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19980918T010000
-RDATE:19980918T010000
-RDATE:19970919T010000
-RDATE:19960920T010000
-RDATE:19661001T030000
-RDATE:19650930T030000
-RDATE:19640930T030000
-RDATE:19630930T030000
-RDATE:19620930T030000
-RDATE:19610930T030000
-RDATE:19600930T030000
-RDATE:19590930T030000
-RDATE:19581001T000000
-RDATE:19571001T000000
-RDATE:19461101T000000
-RDATE:19451101T020000
-RDATE:19441101T000000
-RDATE:19431101T000000
-RDATE:19421101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980403T000000
-RDATE:19980403T000000
-RDATE:19970404T000000
-RDATE:19960405T000000
-RDATE:19670501T010000
-RDATE:19660501T010000
-RDATE:19650501T010000
-RDATE:19640501T010000
-RDATE:19630501T010000
-RDATE:19620501T010000
-RDATE:19610501T010000
-RDATE:19600501T010000
-RDATE:19590501T010000
-RDATE:19580501T000000
-RDATE:19570510T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:IST
-DTSTART:19950903T000000
-RDATE:19950903T000000
-RDATE:19940828T000000
-RDATE:19930905T000000
-RDATE:19920906T000000
-RDATE:19910901T000000
-RDATE:19900826T000000
-RDATE:19890903T000000
-RDATE:19880903T000000
-RDATE:19870913T000000
-RDATE:19860907T000000
-RDATE:19850915T000000
-RDATE:19750831T000000
-RDATE:19741013T000000
-RDATE:19670605T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:IDT
-DTSTART:19950331T000000
-RDATE:19950331T000000
-RDATE:19940401T000000
-RDATE:19930402T000000
-RDATE:19920329T000000
-RDATE:19910324T000000
-RDATE:19900325T000000
-RDATE:19890430T000000
-RDATE:19880409T000000
-RDATE:19870415T000000
-RDATE:19860518T000000
-RDATE:19850414T000000
-RDATE:19750420T000000
-RDATE:19740707T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EET
-DTSTART:19460416T020000
-RDATE:19460416T020000
-RDATE:19450416T000000
-RDATE:19440401T000000
-RDATE:19430401T020000
-RDATE:19400601T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0218
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19001001T000000
-RDATE:19001001T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Harbin.ics b/libical/zoneinfo/Asia/Harbin.ics
index ef66d5385f..ebdfbec423 100644
--- a/libical/zoneinfo/Asia/Harbin.ics
+++ b/libical/zoneinfo/Asia/Harbin.ics
@@ -2,60 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Harbin
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Harbin
 X-LIC-LOCATION:Asia/Harbin
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19910915T000000
-RDATE:19910915T000000
-RDATE:19900916T000000
-RDATE:19890917T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19910414T000000
-RDATE:19910414T000000
-RDATE:19900415T000000
-RDATE:19890416T000000
-RDATE:19880410T000000
-RDATE:19870412T000000
-RDATE:19860504T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0830
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19800501T000000
-RDATE:19800501T000000
-RDATE:19320301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0830
-TZNAME:HART
-DTSTART:19660501T000000
-RDATE:19660501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:HART
-DTSTART:19400101T000000
-RDATE:19400101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0827
-TZOFFSETTO:+0830
-TZNAME:HART
-DTSTART:19280101T000000
-RDATE:19280101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Hong_Kong.ics b/libical/zoneinfo/Asia/Hong_Kong.ics
index 46edd235a2..6418d9c243 100644
--- a/libical/zoneinfo/Asia/Hong_Kong.ics
+++ b/libical/zoneinfo/Asia/Hong_Kong.ics
@@ -2,94 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Hong_Kong
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Hong_Kong
 X-LIC-LOCATION:Asia/Hong_Kong
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:HKT
-DTSTART:19801019T033000
-RDATE:19801019T033000
-RDATE:19791021T033000
-RDATE:19771016T033000
-RDATE:19761017T033000
-RDATE:19751019T033000
-RDATE:19741020T033000
-RDATE:19731021T033000
-RDATE:19721022T033000
-RDATE:19711017T033000
-RDATE:19701018T033000
-RDATE:19691019T033000
-RDATE:19681020T033000
-RDATE:19671022T033000
-RDATE:19661016T033000
-RDATE:19651017T033000
-RDATE:19641101T033000
-RDATE:19631103T033000
-RDATE:19621104T033000
-RDATE:19611105T033000
-RDATE:19601106T033000
-RDATE:19591101T033000
-RDATE:19581102T033000
-RDATE:19571103T033000
-RDATE:19561104T033000
-RDATE:19551106T033000
-RDATE:19541031T033000
-RDATE:19531101T033000
-RDATE:19521026T033000
-RDATE:19511028T033000
-RDATE:19501029T033000
-RDATE:19491030T033000
-RDATE:19481031T033000
-RDATE:19471230T033000
-RDATE:19461201T033000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:HKST
-DTSTART:19800511T033000
-RDATE:19800511T033000
-RDATE:19790513T033000
-RDATE:19770417T033000
-RDATE:19760418T033000
-RDATE:19750420T033000
-RDATE:19740421T033000
-RDATE:19730422T033000
-RDATE:19720416T033000
-RDATE:19710418T033000
-RDATE:19700419T033000
-RDATE:19690420T033000
-RDATE:19680421T033000
-RDATE:19670416T033000
-RDATE:19660417T033000
-RDATE:19650418T033000
-RDATE:19640322T033000
-RDATE:19630324T033000
-RDATE:19620318T033000
-RDATE:19610319T033000
-RDATE:19600320T033000
-RDATE:19590322T033000
-RDATE:19580323T033000
-RDATE:19570324T033000
-RDATE:19560318T033000
-RDATE:19550320T033000
-RDATE:19540321T033000
-RDATE:19530405T033000
-RDATE:19520406T033000
-RDATE:19510401T033000
-RDATE:19500402T033000
-RDATE:19490403T033000
-RDATE:19480502T033000
-RDATE:19470413T033000
-RDATE:19460420T033000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0737
 TZOFFSETTO:+0800
 TZNAME:HKT
-DTSTART:19041030T000000
-RDATE:19041030T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Hovd.ics b/libical/zoneinfo/Asia/Hovd.ics
index 3b708888d2..1b93f77b26 100644
--- a/libical/zoneinfo/Asia/Hovd.ics
+++ b/libical/zoneinfo/Asia/Hovd.ics
@@ -2,67 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Hovd
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Hovd
 X-LIC-LOCATION:Asia/Hovd
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:HOVT
-DTSTART:20010928T030000
-RDATE:20010928T030000
-RDATE:19980927T030000
-RDATE:19970928T030000
-RDATE:19960929T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:HOVST
-DTSTART:20010427T020000
-RDATE:20010427T020000
-RDATE:19980329T020000
-RDATE:19970330T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-RDATE:19910331T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
 TZOFFSETTO:+0700
 TZNAME:HOVT
-DTSTART:19780101T000000
-RDATE:19780101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0607
-TZOFFSETTO:+0600
-TZNAME:HOVT
-DTSTART:19050801T000000
-RDATE:19050801T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Irkutsk.ics b/libical/zoneinfo/Asia/Irkutsk.ics
index e682ef8d3d..30f0398a18 100644
--- a/libical/zoneinfo/Asia/Irkutsk.ics
+++ b/libical/zoneinfo/Asia/Irkutsk.ics
@@ -2,94 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Irkutsk
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Irkutsk
 X-LIC-LOCATION:Asia/Irkutsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0900
 TZNAME:IRKST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0900
 TZOFFSETTO:+0800
 TZNAME:IRKT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:IRKT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:IRKST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:IRKT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:IRKT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0800
-TZNAME:IRKST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0657
-TZOFFSETTO:+0700
-TZNAME:IRKT
-DTSTART:19200125T000000
-RDATE:19200125T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0657
-TZOFFSETTO:+0657
-TZNAME:IMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Istanbul.ics b/libical/zoneinfo/Asia/Istanbul.ics
index 7a8453b94d..0c376c11c0 100644
--- a/libical/zoneinfo/Asia/Istanbul.ics
+++ b/libical/zoneinfo/Asia/Istanbul.ics
@@ -2,160 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Istanbul
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Istanbul
 X-LIC-LOCATION:Asia/Istanbul
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19910331T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T040000
-RDATE:19930926T040000
-RDATE:19920927T040000
-RDATE:19910929T040000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850928T000000
-RDATE:19771016T000000
-RDATE:19761031T000000
-RDATE:19751026T000000
-RDATE:19741103T050000
-RDATE:19731104T030000
-RDATE:19721008T000000
-RDATE:19711003T000000
-RDATE:19701004T000000
-RDATE:19641001T000000
-RDATE:19621008T000000
-RDATE:19511008T000000
-RDATE:19501008T000000
-RDATE:19491002T000000
-RDATE:19481003T000000
-RDATE:19471005T000000
-RDATE:19461001T000000
-RDATE:19451008T000000
-RDATE:19421101T000000
-RDATE:19410921T000000
-RDATE:19401005T000000
-RDATE:19251001T000000
-RDATE:19241001T000000
-RDATE:19221008T000000
-RDATE:19211003T000000
-RDATE:19201025T000000
-RDATE:19161001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19910101T000000
-RDATE:19910101T000000
-RDATE:19860101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19780402T000000
-RDATE:19770403T000000
-RDATE:19760601T000000
-RDATE:19750330T000000
-RDATE:19740331T020000
-RDATE:19730603T010000
-RDATE:19720507T000000
-RDATE:19710502T000000
-RDATE:19700503T000000
-RDATE:19640515T000000
-RDATE:19620715T000000
-RDATE:19510422T000000
-RDATE:19500419T000000
-RDATE:19490410T000000
-RDATE:19480418T000000
-RDATE:19470420T000000
-RDATE:19460601T000000
-RDATE:19450402T000000
-RDATE:19420401T000000
-RDATE:19401201T000000
-RDATE:19400630T000000
-RDATE:19250501T000000
-RDATE:19240513T000000
-RDATE:19220326T000000
-RDATE:19210403T000000
-RDATE:19200328T000000
-RDATE:19160501T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19850420T000000
-RDATE:19850420T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:TRT
-DTSTART:19831002T000000
-RDATE:19831002T000000
-RDATE:19821011T000000
-RDATE:19811012T000000
-RDATE:19801013T000000
-RDATE:19791015T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:TRST
-DTSTART:19830731T000000
-RDATE:19830731T000000
-RDATE:19820328T030000
-RDATE:19810329T030000
-RDATE:19800406T030000
-RDATE:19781015T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:TRST
-DTSTART:19790401T030000
-RDATE:19790401T030000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0157
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19101001T000000
-RDATE:19101001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0156
-TZOFFSETTO:+0157
-TZNAME:IMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Jakarta.ics b/libical/zoneinfo/Asia/Jakarta.ics
index 26873c636e..a62428cb45 100644
--- a/libical/zoneinfo/Asia/Jakarta.ics
+++ b/libical/zoneinfo/Asia/Jakarta.ics
@@ -2,63 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Jakarta
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Jakarta
 X-LIC-LOCATION:Asia/Jakarta
 BEGIN:STANDARD
-TZOFFSETFROM:+0730
+TZOFFSETFROM:+0700
 TZOFFSETTO:+0700
 TZNAME:WIT
-DTSTART:19640101T000000
-RDATE:19640101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19500501T000000
-RDATE:19500501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0800
-TZNAME:WIT
-DTSTART:19480501T000000
-RDATE:19480501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19450801T000000
-RDATE:19450801T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420323T000000
-RDATE:19420323T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0720
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19321101T000000
-RDATE:19321101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0707
-TZOFFSETTO:+0720
-TZNAME:JAVT
-DTSTART:19231231T234712
-RDATE:19231231T234712
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0707
-TZOFFSETTO:+0707
-TZNAME:JMT
-DTSTART:18670810T000000
-RDATE:18670810T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Jayapura.ics b/libical/zoneinfo/Asia/Jayapura.ics
index 11d1d75c74..90e17d824a 100644
--- a/libical/zoneinfo/Asia/Jayapura.ics
+++ b/libical/zoneinfo/Asia/Jayapura.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Jayapura
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Jayapura
 X-LIC-LOCATION:Asia/Jayapura
 BEGIN:STANDARD
-TZOFFSETFROM:+0930
-TZOFFSETTO:+0900
-TZNAME:EIT
-DTSTART:19640101T000000
-RDATE:19640101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0900
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19440101T000000
-RDATE:19440101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0923
 TZOFFSETTO:+0900
 TZNAME:EIT
-DTSTART:19321101T000000
-RDATE:19321101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Jerusalem.ics b/libical/zoneinfo/Asia/Jerusalem.ics
index 2aaaddde55..3beb623568 100644
--- a/libical/zoneinfo/Asia/Jerusalem.ics
+++ b/libical/zoneinfo/Asia/Jerusalem.ics
@@ -2,134 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Jerusalem
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Jerusalem
 X-LIC-LOCATION:Asia/Jerusalem
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:IDT
-DTSTART:20050401T010000
+DTSTART:19700401T010000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:IST
-DTSTART:20051001T010000
+DTSTART:19701001T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:IST
-DTSTART:20040922T010000
-RDATE:20040922T010000
-RDATE:20031003T010000
-RDATE:20021007T010000
-RDATE:20010924T010000
-RDATE:20001006T010000
-RDATE:19990903T020000
-RDATE:19980906T000000
-RDATE:19970914T000000
-RDATE:19960916T000000
-RDATE:19950903T000000
-RDATE:19940828T000000
-RDATE:19930905T000000
-RDATE:19920906T000000
-RDATE:19910901T000000
-RDATE:19900826T000000
-RDATE:19890903T000000
-RDATE:19880903T000000
-RDATE:19870913T000000
-RDATE:19860907T000000
-RDATE:19850915T000000
-RDATE:19750831T000000
-RDATE:19741013T000000
-RDATE:19570922T000000
-RDATE:19560930T030000
-RDATE:19550911T000000
-RDATE:19540912T000000
-RDATE:19530913T030000
-RDATE:19521019T030000
-RDATE:19511111T030000
-RDATE:19500915T030000
-RDATE:19491101T020000
-RDATE:19481101T020000
-RDATE:19461101T000000
-RDATE:19451101T020000
-RDATE:19441101T000000
-RDATE:19431101T000000
-RDATE:19421101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:IDT
-DTSTART:20040407T010000
-RDATE:20040407T010000
-RDATE:20030328T010000
-RDATE:20020329T010000
-RDATE:20010409T010000
-RDATE:20000414T020000
-RDATE:19990402T020000
-RDATE:19980320T000000
-RDATE:19970321T000000
-RDATE:19960315T000000
-RDATE:19950331T000000
-RDATE:19940401T000000
-RDATE:19930402T000000
-RDATE:19920329T000000
-RDATE:19910324T000000
-RDATE:19900325T000000
-RDATE:19890430T000000
-RDATE:19880409T000000
-RDATE:19870415T000000
-RDATE:19860518T000000
-RDATE:19850414T000000
-RDATE:19750420T000000
-RDATE:19740707T000000
-RDATE:19570429T020000
-RDATE:19560603T000000
-RDATE:19550611T020000
-RDATE:19540613T000000
-RDATE:19530412T020000
-RDATE:19520420T020000
-RDATE:19510401T000000
-RDATE:19500416T000000
-RDATE:19490501T000000
-RDATE:19460416T020000
-RDATE:19450416T000000
-RDATE:19440401T000000
-RDATE:19430401T020000
-RDATE:19400601T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:IDT
-DTSTART:19480901T000000
-RDATE:19480901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0400
-TZNAME:IDDT
-DTSTART:19480523T000000
-RDATE:19480523T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0221
-TZOFFSETTO:+0200
-TZNAME:IST
-DTSTART:19180101T000000
-RDATE:19180101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0221
-TZOFFSETTO:+0221
-TZNAME:JMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kabul.ics b/libical/zoneinfo/Asia/Kabul.ics
index b31a07aff9..d11e171955 100644
--- a/libical/zoneinfo/Asia/Kabul.ics
+++ b/libical/zoneinfo/Asia/Kabul.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Kabul
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Kabul
 X-LIC-LOCATION:Asia/Kabul
 BEGIN:STANDARD
-TZOFFSETFROM:+0400
+TZOFFSETFROM:+0430
 TZOFFSETTO:+0430
 TZNAME:AFT
-DTSTART:19450101T000000
-RDATE:19450101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0437
-TZOFFSETTO:+0400
-TZNAME:AFT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kamchatka.ics b/libical/zoneinfo/Asia/Kamchatka.ics
index 225702e5fa..f860dd1ce2 100644
--- a/libical/zoneinfo/Asia/Kamchatka.ics
+++ b/libical/zoneinfo/Asia/Kamchatka.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Kamchatka
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Kamchatka
 X-LIC-LOCATION:Asia/Kamchatka
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1300
 TZNAME:PETST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1300
 TZOFFSETTO:+1200
 TZNAME:PETT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:PETT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:PETST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:PETT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:PETT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1200
-TZNAME:PETST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1035
-TZOFFSETTO:+1100
-TZNAME:PETT
-DTSTART:19221110T000000
-RDATE:19221110T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Karachi.ics b/libical/zoneinfo/Asia/Karachi.ics
index b3d4a27ed0..0bed70d6a7 100644
--- a/libical/zoneinfo/Asia/Karachi.ics
+++ b/libical/zoneinfo/Asia/Karachi.ics
@@ -2,42 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Karachi
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Karachi
 X-LIC-LOCATION:Asia/Karachi
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
 TZNAME:PKT
-DTSTART:19710326T000000
-RDATE:19710326T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0530
-TZOFFSETTO:+0500
-TZNAME:KART
-DTSTART:19510930T000000
-RDATE:19510930T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0630
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19451015T000000
-RDATE:19451015T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0530
-TZOFFSETTO:+0630
-TZNAME:IST
-DTSTART:19420901T000000
-RDATE:19420901T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0428
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19070101T000000
-RDATE:19070101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kashgar.ics b/libical/zoneinfo/Asia/Kashgar.ics
index 4e4a7e1d4e..96fbb748e2 100644
--- a/libical/zoneinfo/Asia/Kashgar.ics
+++ b/libical/zoneinfo/Asia/Kashgar.ics
@@ -2,52 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Kashgar
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Kashgar
 X-LIC-LOCATION:Asia/Kashgar
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19910915T000000
-RDATE:19910915T000000
-RDATE:19900916T000000
-RDATE:19890917T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19910414T000000
-RDATE:19910414T000000
-RDATE:19900415T000000
-RDATE:19890416T000000
-RDATE:19880410T000000
-RDATE:19870412T000000
-RDATE:19860504T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19800501T000000
-RDATE:19800501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0530
-TZOFFSETTO:+0500
-TZNAME:KAST
-DTSTART:19400101T000000
-RDATE:19400101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0504
-TZOFFSETTO:+0530
-TZNAME:KAST
-DTSTART:19280101T000000
-RDATE:19280101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Katmandu.ics b/libical/zoneinfo/Asia/Katmandu.ics
index 32713850ac..7d9b0084f2 100644
--- a/libical/zoneinfo/Asia/Katmandu.ics
+++ b/libical/zoneinfo/Asia/Katmandu.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Katmandu
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Katmandu
 X-LIC-LOCATION:Asia/Katmandu
 BEGIN:STANDARD
-TZOFFSETFROM:+0530
+TZOFFSETFROM:+0545
 TZOFFSETTO:+0545
 TZNAME:NPT
-DTSTART:19860101T000000
-RDATE:19860101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0541
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Krasnoyarsk.ics b/libical/zoneinfo/Asia/Krasnoyarsk.ics
index 106824b010..6867fb5ba2 100644
--- a/libical/zoneinfo/Asia/Krasnoyarsk.ics
+++ b/libical/zoneinfo/Asia/Krasnoyarsk.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Krasnoyarsk
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Krasnoyarsk
 X-LIC-LOCATION:Asia/Krasnoyarsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0700
 TZOFFSETTO:+0800
 TZNAME:KRAST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0700
 TZNAME:KRAT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:KRAT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:KRAST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:KRAT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:KRAT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0700
-TZNAME:KRAST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0611
-TZOFFSETTO:+0600
-TZNAME:KRAT
-DTSTART:19200106T000000
-RDATE:19200106T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kuala_Lumpur.ics b/libical/zoneinfo/Asia/Kuala_Lumpur.ics
index b02ccaccf2..115ec3ed7f 100644
--- a/libical/zoneinfo/Asia/Kuala_Lumpur.ics
+++ b/libical/zoneinfo/Asia/Kuala_Lumpur.ics
@@ -2,56 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Kuala_Lumpur
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Kuala_Lumpur
 X-LIC-LOCATION:Asia/Kuala_Lumpur
 BEGIN:STANDARD
-TZOFFSETFROM:+0730
+TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:MYT
-DTSTART:19820501T000000
-RDATE:19820501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0720
-TZOFFSETTO:+0730
-TZNAME:MALT
-DTSTART:19500101T000000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0720
-TZNAME:MALT
-DTSTART:19450902T000000
-RDATE:19450902T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0720
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420215T000000
-RDATE:19420215T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0720
-TZNAME:MALT
-DTSTART:19330101T000000
-RDATE:19330101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0655
-TZOFFSETTO:+0700
-TZNAME:MALT
-DTSTART:19050601T000000
-RDATE:19050601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0647
-TZOFFSETTO:+0655
-TZNAME:SMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kuching.ics b/libical/zoneinfo/Asia/Kuching.ics
index b28bdb37d3..46cca7b4ba 100644
--- a/libical/zoneinfo/Asia/Kuching.ics
+++ b/libical/zoneinfo/Asia/Kuching.ics
@@ -2,68 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Kuching
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Kuching
 X-LIC-LOCATION:Asia/Kuching
 BEGIN:STANDARD
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:MYT
-DTSTART:19820501T000000
-RDATE:19820501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:BORT
-DTSTART:19450902T000000
-RDATE:19450902T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420101T000000
-RDATE:19420101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0820
-TZOFFSETTO:+0800
-TZNAME:BORT
-DTSTART:19411214T000000
-RDATE:19411214T000000
-RDATE:19401214T000000
-RDATE:19391214T000000
-RDATE:19381214T000000
-RDATE:19371214T000000
-RDATE:19361214T000000
-RDATE:19351214T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0820
-TZNAME:BORTST
-DTSTART:19410914T000000
-RDATE:19410914T000000
-RDATE:19400914T000000
-RDATE:19390914T000000
-RDATE:19380914T000000
-RDATE:19370914T000000
-RDATE:19360914T000000
-RDATE:19350914T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0800
-TZNAME:BORT
-DTSTART:19330101T000000
-RDATE:19330101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0721
-TZOFFSETTO:+0730
-TZNAME:BORT
-DTSTART:19260301T000000
-RDATE:19260301T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Kuwait.ics b/libical/zoneinfo/Asia/Kuwait.ics
index ecf3b9ee66..0cd41994f9 100644
--- a/libical/zoneinfo/Asia/Kuwait.ics
+++ b/libical/zoneinfo/Asia/Kuwait.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Asia/Kuwait
+TZID:/softwarestudio.org/Olson_20011030_4/Asia/Kuwait
 X-LIC-LOCATION:Asia/Kuwait
 BEGIN:STANDARD
-TZOFFSETFROM:+0312
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19500101T000000
-RDATE:19500101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Macao.ics b/libical/zoneinfo/Asia/Macao.ics
index 5edc070dfb..a7b1fb6a17 100644
--- a/libical/zoneinfo/Asia/Macao.ics
+++ b/libical/zoneinfo/Asia/Macao.ics
@@ -2,73 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Macao
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Macao
 X-LIC-LOCATION:Asia/Macao
 BEGIN:STANDARD
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19991220T000000
-RDATE:19991220T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:MOT
-DTSTART:19801019T000000
-RDATE:19801019T000000
-RDATE:19791021T000000
-RDATE:19781015T000000
-RDATE:19771016T033000
-RDATE:19761017T033000
-RDATE:19751019T033000
-RDATE:19741020T033000
-RDATE:19731021T000000
-RDATE:19721015T000000
-RDATE:19711017T033000
-RDATE:19701018T033000
-RDATE:19691019T033000
-RDATE:19681020T033000
-RDATE:19671022T033000
-RDATE:19661016T033000
-RDATE:19651031T000000
-RDATE:19641101T033000
-RDATE:19631103T033000
-RDATE:19621104T033000
-RDATE:19611105T033000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:MOST
-DTSTART:19800420T000000
-RDATE:19800420T000000
-RDATE:19790415T000000
-RDATE:19780416T000000
-RDATE:19770417T033000
-RDATE:19760418T033000
-RDATE:19750420T033000
-RDATE:19740421T000000
-RDATE:19730415T000000
-RDATE:19720416T000000
-RDATE:19710418T033000
-RDATE:19700419T033000
-RDATE:19690420T033000
-RDATE:19680421T033000
-RDATE:19670416T033000
-RDATE:19660417T033000
-RDATE:19650321T000000
-RDATE:19640322T033000
-RDATE:19630317T000000
-RDATE:19620318T033000
-RDATE:19610319T033000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0734
-TZOFFSETTO:+0800
-TZNAME:MOT
-DTSTART:19120101T000000
-RDATE:19120101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Magadan.ics b/libical/zoneinfo/Asia/Magadan.ics
index 895f1172f7..28b4628da6 100644
--- a/libical/zoneinfo/Asia/Magadan.ics
+++ b/libical/zoneinfo/Asia/Magadan.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Magadan
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Magadan
 X-LIC-LOCATION:Asia/Magadan
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1200
 TZNAME:MAGST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1100
 TZNAME:MAGT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:MAGT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:MAGST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:MAGT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:MAGT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1100
-TZNAME:MAGST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1003
-TZOFFSETTO:+1000
-TZNAME:MAGT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Manila.ics b/libical/zoneinfo/Asia/Manila.ics
index 641855cb01..1678165ba1 100644
--- a/libical/zoneinfo/Asia/Manila.ics
+++ b/libical/zoneinfo/Asia/Manila.ics
@@ -2,47 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Manila
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Manila
 X-LIC-LOCATION:Asia/Manila
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:PHT
-DTSTART:19780921T000000
-RDATE:19780921T000000
-RDATE:19540701T000000
-RDATE:19441101T000000
-RDATE:19370201T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:PHST
-DTSTART:19780322T000000
-RDATE:19780322T000000
-RDATE:19540412T000000
-RDATE:19361101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420501T000000
-RDATE:19420501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0804
 TZOFFSETTO:+0800
 TZNAME:PHT
-DTSTART:18990511T000000
-RDATE:18990511T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1556
-TZOFFSETTO:+0804
-TZNAME:LMT
-DTSTART:18441231T000000
-RDATE:18441231T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Muscat.ics b/libical/zoneinfo/Asia/Muscat.ics
index 2cec32291e..456a682a43 100644
--- a/libical/zoneinfo/Asia/Muscat.ics
+++ b/libical/zoneinfo/Asia/Muscat.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Asia/Muscat
+TZID:/softwarestudio.org/Olson_20011030_4/Asia/Muscat
 X-LIC-LOCATION:Asia/Muscat
 BEGIN:STANDARD
-TZOFFSETFROM:+0354
+TZOFFSETFROM:+0400
 TZOFFSETTO:+0400
 TZNAME:GST
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Nicosia.ics b/libical/zoneinfo/Asia/Nicosia.ics
index 4bcfe7f0bb..801ec2d038 100644
--- a/libical/zoneinfo/Asia/Nicosia.ics
+++ b/libical/zoneinfo/Asia/Nicosia.ics
@@ -2,94 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Nicosia
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Nicosia
 X-LIC-LOCATION:Asia/Nicosia
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19981025T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19990328T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980901T000000
-RDATE:19980901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980329T000000
-RDATE:19980329T000000
-RDATE:19970330T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-RDATE:19910331T000000
-RDATE:19900325T000000
-RDATE:19890326T000000
-RDATE:19880327T000000
-RDATE:19870329T000000
-RDATE:19860330T000000
-RDATE:19850331T000000
-RDATE:19840325T000000
-RDATE:19830327T000000
-RDATE:19820328T000000
-RDATE:19810329T000000
-RDATE:19800406T000000
-RDATE:19790401T000000
-RDATE:19780402T000000
-RDATE:19770403T000000
-RDATE:19760515T000000
-RDATE:19750413T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19970928T000000
-RDATE:19970928T000000
-RDATE:19960929T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T000000
-RDATE:19900930T000000
-RDATE:19890924T000000
-RDATE:19880925T000000
-RDATE:19870927T000000
-RDATE:19860928T000000
-RDATE:19850929T000000
-RDATE:19840930T000000
-RDATE:19830925T000000
-RDATE:19820926T000000
-RDATE:19810927T000000
-RDATE:19800928T000000
-RDATE:19790930T000000
-RDATE:19781002T000000
-RDATE:19770925T000000
-RDATE:19761011T000000
-RDATE:19751012T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0213
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19211114T000000
-RDATE:19211114T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Novosibirsk.ics b/libical/zoneinfo/Asia/Novosibirsk.ics
index 2f082474e3..a3a8bd00b0 100644
--- a/libical/zoneinfo/Asia/Novosibirsk.ics
+++ b/libical/zoneinfo/Asia/Novosibirsk.ics
@@ -2,95 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Novosibirsk
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Novosibirsk
 X-LIC-LOCATION:Asia/Novosibirsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0700
 TZNAME:NOVST
-DTSTART:19940327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0700
 TZOFFSETTO:+0600
 TZNAME:NOVT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:NOVT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:NOVST
-DTSTART:19930523T000000
-RDATE:19930523T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:NOVST
-DTSTART:19930328T020000
-RDATE:19930328T020000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:NOVT
-DTSTART:19920926T230000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:NOVT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0700
-TZNAME:NOVST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0532
-TZOFFSETTO:+0600
-TZNAME:NOVT
-DTSTART:19191214T060000
-RDATE:19191214T060000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Omsk.ics b/libical/zoneinfo/Asia/Omsk.ics
index 0bd525cded..1a5082cdc2 100644
--- a/libical/zoneinfo/Asia/Omsk.ics
+++ b/libical/zoneinfo/Asia/Omsk.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Omsk
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Omsk
 X-LIC-LOCATION:Asia/Omsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0700
 TZNAME:OMSST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0700
 TZOFFSETTO:+0600
 TZNAME:OMST
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:OMST
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:OMSST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:OMST
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:OMST
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:OMSST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0454
-TZOFFSETTO:+0500
-TZNAME:OMST
-DTSTART:19191114T000000
-RDATE:19191114T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Phnom_Penh.ics b/libical/zoneinfo/Asia/Phnom_Penh.ics
index e351efec17..834e866cb0 100644
--- a/libical/zoneinfo/Asia/Phnom_Penh.ics
+++ b/libical/zoneinfo/Asia/Phnom_Penh.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Phnom_Penh
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Phnom_Penh
 X-LIC-LOCATION:Asia/Phnom_Penh
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:ICT
-DTSTART:19310501T000000
-RDATE:19310501T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:ICT
-DTSTART:19120501T000000
-RDATE:19120501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0706
 TZOFFSETTO:+0700
 TZNAME:ICT
-DTSTART:19110311T000100
-RDATE:19110311T000100
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0706
-TZNAME:SMT
-DTSTART:19060609T000000
-RDATE:19060609T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Pontianak.ics b/libical/zoneinfo/Asia/Pontianak.ics
index c2586b94e5..ca942e683c 100644
--- a/libical/zoneinfo/Asia/Pontianak.ics
+++ b/libical/zoneinfo/Asia/Pontianak.ics
@@ -2,63 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Pontianak
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Pontianak
 X-LIC-LOCATION:Asia/Pontianak
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
+TZOFFSETFROM:+0700
 TZOFFSETTO:+0700
 TZNAME:WIT
-DTSTART:19880101T000000
-RDATE:19880101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0800
-TZNAME:CIT
-DTSTART:19640101T000000
-RDATE:19640101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19500501T000000
-RDATE:19500501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0800
-TZNAME:WIT
-DTSTART:19480501T000000
-RDATE:19480501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19450801T000000
-RDATE:19450801T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420129T000000
-RDATE:19420129T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0717
-TZOFFSETTO:+0730
-TZNAME:WIT
-DTSTART:19321101T000000
-RDATE:19321101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0717
-TZOFFSETTO:+0717
-TZNAME:PMT
-DTSTART:19080501T000000
-RDATE:19080501T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Pyongyang.ics b/libical/zoneinfo/Asia/Pyongyang.ics
index 8be637015a..36ca7cf05b 100644
--- a/libical/zoneinfo/Asia/Pyongyang.ics
+++ b/libical/zoneinfo/Asia/Pyongyang.ics
@@ -2,43 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Pyongyang
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Pyongyang
 X-LIC-LOCATION:Asia/Pyongyang
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:KST
-DTSTART:19610810T000000
-RDATE:19610810T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:KST
-DTSTART:19540321T000000
-RDATE:19540321T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0830
 TZOFFSETTO:+0900
 TZNAME:KST
-DTSTART:19320101T000000
-RDATE:19320101T000000
-RDATE:19041201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0830
-TZNAME:KST
-DTSTART:19280101T000000
-RDATE:19280101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0823
-TZOFFSETTO:+0830
-TZNAME:KST
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Qatar.ics b/libical/zoneinfo/Asia/Qatar.ics
index 9dfb1ea4f0..5693076344 100644
--- a/libical/zoneinfo/Asia/Qatar.ics
+++ b/libical/zoneinfo/Asia/Qatar.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Qatar
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Qatar
 X-LIC-LOCATION:Asia/Qatar
 BEGIN:STANDARD
-TZOFFSETFROM:+0400
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19720601T000000
-RDATE:19720601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0326
-TZOFFSETTO:+0400
-TZNAME:GST
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Rangoon.ics b/libical/zoneinfo/Asia/Rangoon.ics
index c425e4b8fe..b6fd62e4b4 100644
--- a/libical/zoneinfo/Asia/Rangoon.ics
+++ b/libical/zoneinfo/Asia/Rangoon.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Rangoon
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Rangoon
 X-LIC-LOCATION:Asia/Rangoon
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0630
-TZNAME:MMT
-DTSTART:19450503T000000
-RDATE:19450503T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0630
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420501T000000
-RDATE:19420501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0625
 TZOFFSETTO:+0630
-TZNAME:BURT
-DTSTART:19200101T000000
-RDATE:19200101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0625
-TZOFFSETTO:+0625
-TZNAME:RMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+TZNAME:MMT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Riyadh.ics b/libical/zoneinfo/Asia/Riyadh.ics
index 1ba7574b31..905f6045c7 100644
--- a/libical/zoneinfo/Asia/Riyadh.ics
+++ b/libical/zoneinfo/Asia/Riyadh.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Asia/Riyadh
+TZID:/softwarestudio.org/Olson_20011030_4/Asia/Riyadh
 X-LIC-LOCATION:Asia/Riyadh
 BEGIN:STANDARD
-TZOFFSETFROM:+0307
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:AST
-DTSTART:19500101T000000
-RDATE:19500101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Saigon.ics b/libical/zoneinfo/Asia/Saigon.ics
index a744300771..6dfda17fe7 100644
--- a/libical/zoneinfo/Asia/Saigon.ics
+++ b/libical/zoneinfo/Asia/Saigon.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Saigon
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Saigon
 X-LIC-LOCATION:Asia/Saigon
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:ICT
-DTSTART:19310501T000000
-RDATE:19310501T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:ICT
-DTSTART:19120501T000000
-RDATE:19120501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0706
 TZOFFSETTO:+0700
 TZNAME:ICT
-DTSTART:19110311T000100
-RDATE:19110311T000100
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0707
-TZOFFSETTO:+0706
-TZNAME:SMT
-DTSTART:19060609T000000
-RDATE:19060609T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Sakhalin.ics b/libical/zoneinfo/Asia/Sakhalin.ics
index 8ccd0310f3..e5aedabf3c 100644
--- a/libical/zoneinfo/Asia/Sakhalin.ics
+++ b/libical/zoneinfo/Asia/Sakhalin.ics
@@ -2,106 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_1/Asia/Sakhalin
+TZID:/softwarestudio.org/Olson_20011030_2/Asia/Sakhalin
 X-LIC-LOCATION:Asia/Sakhalin
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1000
 TZNAME:SAKT
-DTSTART:19971026T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1100
 TZNAME:SAKST
-DTSTART:19980329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1100
-TZNAME:SAKST
-DTSTART:19970330T020000
-RDATE:19970330T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:SAKT
-DTSTART:19961027T030000
-RDATE:19961027T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:SAKST
-DTSTART:19960331T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:SAKT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:SAKT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1100
-TZNAME:SAKT
-DTSTART:19450825T000000
-RDATE:19450825T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19380101T000000
-RDATE:19380101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0931
-TZOFFSETTO:+0900
-TZNAME:CJT
-DTSTART:19050823T000000
-RDATE:19050823T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Samarkand.ics b/libical/zoneinfo/Asia/Samarkand.ics
index 465f88723a..7e8e385055 100644
--- a/libical/zoneinfo/Asia/Samarkand.ics
+++ b/libical/zoneinfo/Asia/Samarkand.ics
@@ -2,102 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Samarkand
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Samarkand
 X-LIC-LOCATION:Asia/Samarkand
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
 TZNAME:UZT
-DTSTART:19930101T000000
-RDATE:19930101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:UZT
-DTSTART:19920926T230000
-RDATE:19920926T230000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:UZST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:UZST
-DTSTART:19910901T000000
-RDATE:19910901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:TASST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:TAST
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:TASST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:TAST
-DTSTART:19811001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:SAMST
-DTSTART:19810401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:SAMT
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0427
-TZOFFSETTO:+0400
-TZNAME:SAMT
-DTSTART:19240502T000000
-RDATE:19240502T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Seoul.ics b/libical/zoneinfo/Asia/Seoul.ics
index 9cb7b74ec9..eacdbbe3cc 100644
--- a/libical/zoneinfo/Asia/Seoul.ics
+++ b/libical/zoneinfo/Asia/Seoul.ics
@@ -2,68 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Seoul
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Seoul
 X-LIC-LOCATION:Asia/Seoul
 BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+0900
-TZNAME:KST
-DTSTART:19881009T000000
-RDATE:19881009T000000
-RDATE:19871011T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0900
-TZOFFSETTO:+1000
-TZNAME:KDT
-DTSTART:19880508T000000
-RDATE:19880508T000000
-RDATE:19870510T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0830
 TZOFFSETTO:+0900
 TZNAME:KST
-DTSTART:19681001T000000
-RDATE:19681001T000000
-RDATE:19320101T000000
-RDATE:19041201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0830
-TZNAME:KST
-DTSTART:19610810T000000
-RDATE:19610810T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:KST
-DTSTART:19600913T000000
-RDATE:19600913T000000
-RDATE:19540321T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:KDT
-DTSTART:19600515T000000
-RDATE:19600515T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0830
-TZNAME:KST
-DTSTART:19280101T000000
-RDATE:19280101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0828
-TZOFFSETTO:+0830
-TZNAME:KST
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Shanghai.ics b/libical/zoneinfo/Asia/Shanghai.ics
index 9ad2c9fbf0..96f86b0985 100644
--- a/libical/zoneinfo/Asia/Shanghai.ics
+++ b/libical/zoneinfo/Asia/Shanghai.ics
@@ -2,49 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Shanghai
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Shanghai
 X-LIC-LOCATION:Asia/Shanghai
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19910915T000000
-RDATE:19910915T000000
-RDATE:19900916T000000
-RDATE:19890917T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-RDATE:19411001T000000
-RDATE:19401001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19910414T000000
-RDATE:19910414T000000
-RDATE:19900415T000000
-RDATE:19890416T000000
-RDATE:19880410T000000
-RDATE:19870412T000000
-RDATE:19860504T000000
-RDATE:19410316T000000
-RDATE:19400603T000000
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19490101T000000
-RDATE:19490101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0806
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19280101T000000
-RDATE:19280101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Singapore.ics b/libical/zoneinfo/Asia/Singapore.ics
index fee8fdc352..08b6392719 100644
--- a/libical/zoneinfo/Asia/Singapore.ics
+++ b/libical/zoneinfo/Asia/Singapore.ics
@@ -2,63 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Singapore
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Singapore
 X-LIC-LOCATION:Asia/Singapore
 BEGIN:STANDARD
-TZOFFSETFROM:+0730
+TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:SGT
-DTSTART:19820501T000000
-RDATE:19820501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0730
-TZOFFSETTO:+0730
-TZNAME:SGT
-DTSTART:19650809T000000
-RDATE:19650809T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0720
-TZOFFSETTO:+0730
-TZNAME:MALT
-DTSTART:19500101T000000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0720
-TZNAME:MALT
-DTSTART:19450902T000000
-RDATE:19450902T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0720
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420215T000000
-RDATE:19420215T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0720
-TZNAME:MALT
-DTSTART:19330101T000000
-RDATE:19330101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0655
-TZOFFSETTO:+0700
-TZNAME:MALT
-DTSTART:19050601T000000
-RDATE:19050601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0655
-TZOFFSETTO:+0655
-TZNAME:SMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Taipei.ics b/libical/zoneinfo/Asia/Taipei.ics
index 9ea401765b..dfc9a539bf 100644
--- a/libical/zoneinfo/Asia/Taipei.ics
+++ b/libical/zoneinfo/Asia/Taipei.ics
@@ -2,66 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Taipei
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Taipei
 X-LIC-LOCATION:Asia/Taipei
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19800930T000000
-RDATE:19800930T000000
-RDATE:19751001T000000
-RDATE:19741001T000000
-RDATE:19611001T000000
-RDATE:19601001T000000
-RDATE:19591001T000000
-RDATE:19581001T000000
-RDATE:19571001T000000
-RDATE:19561001T000000
-RDATE:19551001T000000
-RDATE:19541101T000000
-RDATE:19531101T000000
-RDATE:19521101T000000
-RDATE:19511001T000000
-RDATE:19501001T000000
-RDATE:19491001T000000
-RDATE:19481001T000000
-RDATE:19471001T000000
-RDATE:19461001T000000
-RDATE:19451001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19800630T000000
-RDATE:19800630T000000
-RDATE:19750401T000000
-RDATE:19740401T000000
-RDATE:19610601T000000
-RDATE:19600601T000000
-RDATE:19590401T000000
-RDATE:19580401T000000
-RDATE:19570401T000000
-RDATE:19560401T000000
-RDATE:19550401T000000
-RDATE:19540401T000000
-RDATE:19530401T000000
-RDATE:19520301T000000
-RDATE:19510501T000000
-RDATE:19500501T000000
-RDATE:19490501T000000
-RDATE:19480501T000000
-RDATE:19470501T000000
-RDATE:19460501T000000
-RDATE:19450501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0806
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:18960101T000000
-RDATE:18960101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Tashkent.ics b/libical/zoneinfo/Asia/Tashkent.ics
index 9ba607d3cc..14a304a72f 100644
--- a/libical/zoneinfo/Asia/Tashkent.ics
+++ b/libical/zoneinfo/Asia/Tashkent.ics
@@ -2,90 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Tashkent
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Tashkent
 X-LIC-LOCATION:Asia/Tashkent
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
 TZNAME:UZT
-DTSTART:19930101T000000
-RDATE:19930101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:UZT
-DTSTART:19920926T230000
-RDATE:19920926T230000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:UZST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:UZST
-DTSTART:19910901T000000
-RDATE:19910901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0600
-TZNAME:TASST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
-TZOFFSETTO:+0600
-TZNAME:TAST
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0700
-TZNAME:TASST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:TAST
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0437
-TZOFFSETTO:+0500
-TZNAME:TAST
-DTSTART:19240502T000000
-RDATE:19240502T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Tbilisi.ics b/libical/zoneinfo/Asia/Tbilisi.ics
index 99cdce31e2..95cdd81a73 100644
--- a/libical/zoneinfo/Asia/Tbilisi.ics
+++ b/libical/zoneinfo/Asia/Tbilisi.ics
@@ -2,143 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Tbilisi
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Tbilisi
 X-LIC-LOCATION:Asia/Tbilisi
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0400
 TZNAME:GET
-DTSTART:19971026T000000
+DTSTART:19701025T000000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0500
 TZNAME:GEST
-DTSTART:19980329T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0500
-TZNAME:GEST
-DTSTART:19970330T000000
-RDATE:19970330T000000
-RDATE:19961027T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:GEST
-DTSTART:19960331T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:GET
-DTSTART:19950924T000000
-RDATE:19950924T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:GET
-DTSTART:19940925T000000
-RDATE:19940925T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:GEST
-DTSTART:19940327T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:GET
-DTSTART:19930926T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:GET
-DTSTART:19920101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:GEST
-DTSTART:19910409T000000
-RDATE:19910409T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:TBIST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:TBIT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:TBIST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:TBIT
-DTSTART:19570301T000000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0259
-TZOFFSETTO:+0300
-TZNAME:TBIT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0259
-TZOFFSETTO:+0259
-TZNAME:TBMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Tehran.ics b/libical/zoneinfo/Asia/Tehran.ics
index face9bbb8b..f9f00ea0d4 100644
--- a/libical/zoneinfo/Asia/Tehran.ics
+++ b/libical/zoneinfo/Asia/Tehran.ics
@@ -2,159 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Tehran
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Tehran
 X-LIC-LOCATION:Asia/Tehran
 BEGIN:STANDARD
-TZOFFSETFROM:+0430
-TZOFFSETTO:+0330
-TZNAME:IRT
-DTSTART:20370922T000000
-RDATE:20370922T000000
-RDATE:20360922T000000
-RDATE:20350923T000000
-RDATE:20340923T000000
-RDATE:20330922T000000
-RDATE:20320922T000000
-RDATE:20310923T000000
-RDATE:20300923T000000
-RDATE:20290922T000000
-RDATE:20280922T000000
-RDATE:20270923T000000
-RDATE:20260923T000000
-RDATE:20250922T000000
-RDATE:20240922T000000
-RDATE:20230923T000000
-RDATE:20220923T000000
-RDATE:20210923T000000
-RDATE:20200922T000000
-RDATE:20190923T000000
-RDATE:20180923T000000
-RDATE:20170923T000000
-RDATE:20160922T000000
-RDATE:20150923T000000
-RDATE:20140923T000000
-RDATE:20130923T000000
-RDATE:20120922T000000
-RDATE:20110923T000000
-RDATE:20100923T000000
-RDATE:20090923T000000
-RDATE:20080922T000000
-RDATE:20070923T000000
-RDATE:20060923T000000
-RDATE:20050923T000000
-RDATE:20040922T000000
-RDATE:20030923T000000
-RDATE:20020923T000000
-RDATE:20010923T000000
-RDATE:20000922T000000
-RDATE:19990923T000000
-RDATE:19980923T000000
-RDATE:19970923T000000
-RDATE:19960922T000000
-RDATE:19950923T000000
-RDATE:19940923T000000
-RDATE:19930923T000000
-RDATE:19920923T000000
-RDATE:19910920T010000
-RDATE:19800923T000000
-RDATE:19790919T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0330
-TZOFFSETTO:+0430
-TZNAME:IRST
-DTSTART:20370320T000000
-RDATE:20370320T000000
-RDATE:20360320T000000
-RDATE:20350321T000000
-RDATE:20340321T000000
-RDATE:20330320T000000
-RDATE:20320320T000000
-RDATE:20310321T000000
-RDATE:20300321T000000
-RDATE:20290320T000000
-RDATE:20280320T000000
-RDATE:20270321T000000
-RDATE:20260321T000000
-RDATE:20250320T000000
-RDATE:20240320T000000
-RDATE:20230321T000000
-RDATE:20220321T000000
-RDATE:20210321T000000
-RDATE:20200320T000000
-RDATE:20190321T000000
-RDATE:20180321T000000
-RDATE:20170321T000000
-RDATE:20160320T000000
-RDATE:20150321T000000
-RDATE:20140321T000000
-RDATE:20130321T000000
-RDATE:20120320T000000
-RDATE:20110321T000000
-RDATE:20100321T000000
-RDATE:20090321T000000
-RDATE:20080320T000000
-RDATE:20070321T000000
-RDATE:20060321T000000
-RDATE:20050321T000000
-RDATE:20040320T000000
-RDATE:20030321T000000
-RDATE:20020321T000000
-RDATE:20010321T000000
-RDATE:20000320T000000
-RDATE:19990321T000000
-RDATE:19980321T000000
-RDATE:19970321T000000
-RDATE:19960320T000000
-RDATE:19950321T000000
-RDATE:19940321T000000
-RDATE:19930321T000000
-RDATE:19920321T000000
-RDATE:19910503T000000
-RDATE:19800321T000000
-RDATE:19790321T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
 TZOFFSETTO:+0330
 TZNAME:IRT
-DTSTART:19790101T000000
-RDATE:19790101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:IRT
-DTSTART:19781021T000000
-RDATE:19781021T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:IRST
-DTSTART:19780321T000000
-RDATE:19780321T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0330
-TZOFFSETTO:+0400
-TZNAME:IRT
-DTSTART:19771101T000000
-RDATE:19771101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0326
-TZOFFSETTO:+0330
-TZNAME:IRT
-DTSTART:19460101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0326
-TZOFFSETTO:+0326
-TZNAME:TMT
-DTSTART:19160101T000000
-RDATE:19160101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Thimphu.ics b/libical/zoneinfo/Asia/Thimphu.ics
index 785777a236..1c1063af38 100644
--- a/libical/zoneinfo/Asia/Thimphu.ics
+++ b/libical/zoneinfo/Asia/Thimphu.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Thimphu
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Thimphu
 X-LIC-LOCATION:Asia/Thimphu
 BEGIN:STANDARD
-TZOFFSETFROM:+0530
+TZOFFSETFROM:+0600
 TZOFFSETTO:+0600
 TZNAME:BTT
-DTSTART:19871001T000000
-RDATE:19871001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0559
-TZOFFSETTO:+0530
-TZNAME:IST
-DTSTART:19470815T000000
-RDATE:19470815T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Tokyo.ics b/libical/zoneinfo/Asia/Tokyo.ics
index 3952a2dbba..2461b085b6 100644
--- a/libical/zoneinfo/Asia/Tokyo.ics
+++ b/libical/zoneinfo/Asia/Tokyo.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Tokyo
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Tokyo
 X-LIC-LOCATION:Asia/Tokyo
 BEGIN:STANDARD
 TZOFFSETFROM:+0900
 TZOFFSETTO:+0900
 TZNAME:JST
-DTSTART:19380101T000000
-RDATE:19380101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0900
-TZNAME:CJT
-DTSTART:18960101T000000
-RDATE:18960101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0919
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:18880101T001900
-RDATE:18880101T001900
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Ujung_Pandang.ics b/libical/zoneinfo/Asia/Ujung_Pandang.ics
index cf2b5af6d8..c596aa654f 100644
--- a/libical/zoneinfo/Asia/Ujung_Pandang.ics
+++ b/libical/zoneinfo/Asia/Ujung_Pandang.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Ujung_Pandang
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Ujung_Pandang
 X-LIC-LOCATION:Asia/Ujung_Pandang
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CIT
-DTSTART:19450801T000000
-RDATE:19450801T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420209T000000
-RDATE:19420209T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0758
 TZOFFSETTO:+0800
 TZNAME:CIT
-DTSTART:19321101T000000
-RDATE:19321101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0758
-TZOFFSETTO:+0758
-TZNAME:MMT
-DTSTART:19200101T000000
-RDATE:19200101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Ulaanbaatar.ics b/libical/zoneinfo/Asia/Ulaanbaatar.ics
index c0c0f48e58..8945dc7760 100644
--- a/libical/zoneinfo/Asia/Ulaanbaatar.ics
+++ b/libical/zoneinfo/Asia/Ulaanbaatar.ics
@@ -2,67 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Ulaanbaatar
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Ulaanbaatar
 X-LIC-LOCATION:Asia/Ulaanbaatar
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:ULAT
-DTSTART:20010928T030000
-RDATE:20010928T030000
-RDATE:19980927T030000
-RDATE:19970928T030000
-RDATE:19960929T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:ULAST
-DTSTART:20010427T020000
-RDATE:20010427T020000
-RDATE:19980329T020000
-RDATE:19970330T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-RDATE:19910331T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0700
 TZOFFSETTO:+0800
 TZNAME:ULAT
-DTSTART:19780101T000000
-RDATE:19780101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0708
-TZOFFSETTO:+0700
-TZNAME:ULAT
-DTSTART:19050801T000000
-RDATE:19050801T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Urumqi.ics b/libical/zoneinfo/Asia/Urumqi.ics
index 43ee2d50d6..f2b909f5b2 100644
--- a/libical/zoneinfo/Asia/Urumqi.ics
+++ b/libical/zoneinfo/Asia/Urumqi.ics
@@ -2,45 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Urumqi
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Urumqi
 X-LIC-LOCATION:Asia/Urumqi
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:CST
-DTSTART:19910915T000000
-RDATE:19910915T000000
-RDATE:19900916T000000
-RDATE:19890917T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:CDT
-DTSTART:19910414T000000
-RDATE:19910414T000000
-RDATE:19900415T000000
-RDATE:19890416T000000
-RDATE:19880410T000000
-RDATE:19870412T000000
-RDATE:19860504T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
 TZOFFSETTO:+0800
 TZNAME:CST
-DTSTART:19800501T000000
-RDATE:19800501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0550
-TZOFFSETTO:+0600
-TZNAME:URUT
-DTSTART:19280101T000000
-RDATE:19280101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Vientiane.ics b/libical/zoneinfo/Asia/Vientiane.ics
index 06628a09df..d1e14a5eb4 100644
--- a/libical/zoneinfo/Asia/Vientiane.ics
+++ b/libical/zoneinfo/Asia/Vientiane.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Vientiane
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Vientiane
 X-LIC-LOCATION:Asia/Vientiane
 BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0700
-TZNAME:ICT
-DTSTART:19310501T000000
-RDATE:19310501T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0700
-TZOFFSETTO:+0800
-TZNAME:ICT
-DTSTART:19120501T000000
-RDATE:19120501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0706
 TZOFFSETTO:+0700
 TZNAME:ICT
-DTSTART:19110311T000100
-RDATE:19110311T000100
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0650
-TZOFFSETTO:+0706
-TZNAME:SMT
-DTSTART:19060609T000000
-RDATE:19060609T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Vladivostok.ics b/libical/zoneinfo/Asia/Vladivostok.ics
index cfd25dbd60..9436d35028 100644
--- a/libical/zoneinfo/Asia/Vladivostok.ics
+++ b/libical/zoneinfo/Asia/Vladivostok.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Vladivostok
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Vladivostok
 X-LIC-LOCATION:Asia/Vladivostok
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1100
 TZNAME:VLAST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1000
 TZNAME:VLAT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:VLAT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:VLAST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1000
-TZNAME:VLAT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+0900
-TZNAME:VLAST
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1000
-TZNAME:VLASST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0848
-TZOFFSETTO:+0900
-TZNAME:VLAT
-DTSTART:19221115T000000
-RDATE:19221115T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Yakutsk.ics b/libical/zoneinfo/Asia/Yakutsk.ics
index 5d0dfc9c9a..1097c26bd8 100644
--- a/libical/zoneinfo/Asia/Yakutsk.ics
+++ b/libical/zoneinfo/Asia/Yakutsk.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Yakutsk
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Yakutsk
 X-LIC-LOCATION:Asia/Yakutsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0900
 TZOFFSETTO:+1000
 TZNAME:YAKST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1000
 TZOFFSETTO:+0900
 TZNAME:YAKT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+0900
-TZNAME:YAKT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1000
-TZNAME:YAKST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:YAKT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:YAKT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0900
-TZNAME:YAKST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0839
-TZOFFSETTO:+0800
-TZNAME:YAKT
-DTSTART:19191215T000000
-RDATE:19191215T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Yekaterinburg.ics b/libical/zoneinfo/Asia/Yekaterinburg.ics
index 58edb9636f..fc34936997 100644
--- a/libical/zoneinfo/Asia/Yekaterinburg.ics
+++ b/libical/zoneinfo/Asia/Yekaterinburg.ics
@@ -2,105 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Yekaterinburg
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Yekaterinburg
 X-LIC-LOCATION:Asia/Yekaterinburg
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0600
 TZNAME:YEKST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0600
 TZOFFSETTO:+0500
 TZNAME:YEKT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:YEKT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:YEKST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:YEKT
-DTSTART:19920119T020000
-RDATE:19920119T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:SVET
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0500
-TZNAME:SVEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0600
-TZOFFSETTO:+0500
-TZNAME:SVET
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0600
-TZNAME:SVEST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:SVET
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0402
-TZOFFSETTO:+0400
-TZNAME:SVET
-DTSTART:19190715T040000
-RDATE:19190715T040000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Asia/Yerevan.ics b/libical/zoneinfo/Asia/Yerevan.ics
index 19930d0527..70e9a9f818 100644
--- a/libical/zoneinfo/Asia/Yerevan.ics
+++ b/libical/zoneinfo/Asia/Yerevan.ics
@@ -2,109 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Asia/Yerevan
+TZID:/softwarestudio.org/Olson_20011030_5/Asia/Yerevan
 X-LIC-LOCATION:Asia/Yerevan
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0500
 TZNAME:AMST
-DTSTART:19970330T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0400
 TZNAME:AMT
-DTSTART:19971026T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:AMT
-DTSTART:19970101T000000
-RDATE:19970101T000000
-RDATE:19950924T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:AMST
-DTSTART:19950326T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:AMT
-DTSTART:19940925T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:AMST
-DTSTART:19910923T000000
-RDATE:19910923T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:YERST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:YERT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:YERST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:YERT
-DTSTART:19570301T000000
-RDATE:19570301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0258
-TZOFFSETTO:+0300
-TZNAME:YERT
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Azores.ics b/libical/zoneinfo/Atlantic/Azores.ics
index fe19e29f36..bb7b8055f2 100644
--- a/libical/zoneinfo/Atlantic/Azores.ics
+++ b/libical/zoneinfo/Atlantic/Azores.ics
@@ -2,222 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Azores
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Azores
 X-LIC-LOCATION:Atlantic/Azores
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0100
 TZOFFSETTO:+0000
 TZNAME:AZOST
-DTSTART:19940327T000000
+DTSTART:19700329T000000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0000
 TZOFFSETTO:-0100
 TZNAME:AZOT
-DTSTART:19961027T010000
+DTSTART:19701025T010000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:AZOT
-DTSTART:19950924T010000
-RDATE:19950924T010000
-RDATE:19940925T010000
-RDATE:19930926T010000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-RDATE:19800928T020000
-RDATE:19790930T020000
-RDATE:19781001T010000
-RDATE:19770925T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:AZOST
-DTSTART:19930328T010000
-RDATE:19930328T010000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19920927T020000
-RDATE:19920927T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:AZOST
-DTSTART:19920329T010000
-RDATE:19920329T010000
-RDATE:19910331T010000
-RDATE:19900325T010000
-RDATE:19890326T010000
-RDATE:19880327T010000
-RDATE:19870329T010000
-RDATE:19860330T010000
-RDATE:19850331T010000
-RDATE:19840325T010000
-RDATE:19830327T020000
-RDATE:19820328T010000
-RDATE:19810329T010000
-RDATE:19800330T000000
-RDATE:19790401T000000
-RDATE:19780402T000000
-RDATE:19770327T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:AZOT
-DTSTART:19660403T020000
-RDATE:19660403T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:-0200
-TZNAME:AZOT
-DTSTART:19651003T030000
-RDATE:19651003T030000
-RDATE:19641004T030000
-RDATE:19631006T030000
-RDATE:19621007T030000
-RDATE:19611001T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521005T030000
-RDATE:19511007T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T000000
-RDATE:19451028T000000
-RDATE:19441029T000000
-RDATE:19431031T000000
-RDATE:19421025T000000
-RDATE:19411006T000000
-RDATE:19401006T000000
-RDATE:19391119T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19241015T000000
-RDATE:19211015T000000
-RDATE:19201015T000000
-RDATE:19191015T000000
-RDATE:19181015T000000
-RDATE:19171015T000000
-RDATE:19161101T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:AZOST
-DTSTART:19650404T020000
-RDATE:19650404T020000
-RDATE:19640405T020000
-RDATE:19630407T020000
-RDATE:19620401T020000
-RDATE:19610402T020000
-RDATE:19600403T020000
-RDATE:19590405T020000
-RDATE:19580406T020000
-RDATE:19570407T020000
-RDATE:19560401T020000
-RDATE:19550403T020000
-RDATE:19540404T020000
-RDATE:19530405T020000
-RDATE:19520406T020000
-RDATE:19510401T020000
-RDATE:19490403T020000
-RDATE:19480404T020000
-RDATE:19470406T020000
-RDATE:19460406T230000
-RDATE:19450310T230000
-RDATE:19440311T230000
-RDATE:19430313T230000
-RDATE:19420314T230000
-RDATE:19410405T230000
-RDATE:19400224T230000
-RDATE:19390415T230000
-RDATE:19380326T230000
-RDATE:19370403T230000
-RDATE:19360418T230000
-RDATE:19350330T230000
-RDATE:19340407T230000
-RDATE:19320402T230000
-RDATE:19310418T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19240416T230000
-RDATE:19210228T230000
-RDATE:19200229T230000
-RDATE:19190228T230000
-RDATE:19180301T230000
-RDATE:19170228T230000
-RDATE:19160617T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:AZOST
-DTSTART:19450826T000000
-RDATE:19450826T000000
-RDATE:19440827T000000
-RDATE:19430829T000000
-RDATE:19420816T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:AZOMT
-DTSTART:19450421T230000
-RDATE:19450421T230000
-RDATE:19440422T230000
-RDATE:19430417T230000
-RDATE:19420425T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0155
-TZOFFSETTO:-0200
-TZNAME:AZOT
-DTSTART:19110524T000000
-RDATE:19110524T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0143
-TZOFFSETTO:-0155
-TZNAME:HMT
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Bermuda.ics b/libical/zoneinfo/Atlantic/Bermuda.ics
index 2739e80749..9e6d8d153f 100644
--- a/libical/zoneinfo/Atlantic/Bermuda.ics
+++ b/libical/zoneinfo/Atlantic/Bermuda.ics
@@ -2,47 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Bermuda
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Bermuda
 X-LIC-LOCATION:Atlantic/Bermuda
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:AST
-DTSTART:19741027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:ADT
-DTSTART:19870405T020000
+DTSTART:19700405T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:ADT
-DTSTART:19860427T020000
-RDATE:19860427T020000
-RDATE:19850428T020000
-RDATE:19840429T020000
-RDATE:19830424T020000
-RDATE:19820425T020000
-RDATE:19810426T020000
-RDATE:19800427T020000
-RDATE:19790429T020000
-RDATE:19780430T020000
-RDATE:19770424T020000
-RDATE:19760425T020000
-RDATE:19750427T020000
-RDATE:19740428T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0419
-TZOFFSETTO:-0400
-TZNAME:AST
-DTSTART:19300101T020000
-RDATE:19300101T020000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Canary.ics b/libical/zoneinfo/Atlantic/Canary.ics
index 7f9aca2b11..0f23c5d4d0 100644
--- a/libical/zoneinfo/Atlantic/Canary.ics
+++ b/libical/zoneinfo/Atlantic/Canary.ics
@@ -2,71 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Canary
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Canary
 X-LIC-LOCATION:Atlantic/Canary
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:WEST
-DTSTART:19810329T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19950924T020000
-RDATE:19950924T020000
-RDATE:19940925T020000
-RDATE:19930926T020000
-RDATE:19920927T020000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-RDATE:19800928T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19800928T010000
-RDATE:19800928T010000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19800406T000000
-RDATE:19800406T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19460930T010000
-RDATE:19460930T010000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0102
-TZOFFSETTO:-0100
-TZNAME:CANT
-DTSTART:19220301T000000
-RDATE:19220301T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Cape_Verde.ics b/libical/zoneinfo/Atlantic/Cape_Verde.ics
index 6a3754f65d..810ba2a25a 100644
--- a/libical/zoneinfo/Atlantic/Cape_Verde.ics
+++ b/libical/zoneinfo/Atlantic/Cape_Verde.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Cape_Verde
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Cape_Verde
 X-LIC-LOCATION:Atlantic/Cape_Verde
 BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0100
-TZNAME:CVT
-DTSTART:19751125T020000
-RDATE:19751125T020000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:-0100
-TZOFFSETTO:-0200
-TZNAME:CVT
-DTSTART:19451015T000000
-RDATE:19451015T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0200
 TZOFFSETTO:-0100
-TZNAME:CVST
-DTSTART:19420901T000000
-RDATE:19420901T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0134
-TZOFFSETTO:-0200
 TZNAME:CVT
-DTSTART:19070101T000000
-RDATE:19070101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Faeroe.ics b/libical/zoneinfo/Atlantic/Faeroe.ics
index f2063e6816..e3d7dc09cb 100644
--- a/libical/zoneinfo/Atlantic/Faeroe.ics
+++ b/libical/zoneinfo/Atlantic/Faeroe.ics
@@ -2,56 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Faeroe
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Faeroe
 X-LIC-LOCATION:Atlantic/Faeroe
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:WEST
-DTSTART:19810329T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19950924T020000
-RDATE:19950924T020000
-RDATE:19940925T020000
-RDATE:19930926T020000
-RDATE:19920927T020000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0027
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19080111T000000
-RDATE:19080111T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Jan_Mayen.ics b/libical/zoneinfo/Atlantic/Jan_Mayen.ics
index fe2cb83aac..f62456739d 100644
--- a/libical/zoneinfo/Atlantic/Jan_Mayen.ics
+++ b/libical/zoneinfo/Atlantic/Jan_Mayen.ics
@@ -2,88 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Jan_Mayen
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Jan_Mayen
 X-LIC-LOCATION:Atlantic/Jan_Mayen
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19650919T030000
-RDATE:19640920T030000
-RDATE:19630915T030000
-RDATE:19620916T030000
-RDATE:19610917T030000
-RDATE:19600918T030000
-RDATE:19590920T030000
-RDATE:19451001T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19160930T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19650425T020000
-RDATE:19640315T020000
-RDATE:19630317T020000
-RDATE:19620318T020000
-RDATE:19610319T020000
-RDATE:19600320T020000
-RDATE:19590315T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400810T230000
-RDATE:19160522T010000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0043
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Madeira.ics b/libical/zoneinfo/Atlantic/Madeira.ics
index 7c49443d3f..69a9e094a6 100644
--- a/libical/zoneinfo/Atlantic/Madeira.ics
+++ b/libical/zoneinfo/Atlantic/Madeira.ics
@@ -2,200 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Madeira
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Madeira
 X-LIC-LOCATION:Atlantic/Madeira
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:WEST
-DTSTART:19840325T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19950924T020000
-RDATE:19950924T020000
-RDATE:19940925T020000
-RDATE:19930926T020000
-RDATE:19920927T020000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-RDATE:19800928T020000
-RDATE:19790930T020000
-RDATE:19781001T010000
-RDATE:19770925T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19830327T020000
-RDATE:19830327T020000
-RDATE:19820328T010000
-RDATE:19810329T010000
-RDATE:19800330T000000
-RDATE:19790401T000000
-RDATE:19780402T000000
-RDATE:19770327T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19660403T020000
-RDATE:19660403T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:MADT
-DTSTART:19651003T030000
-RDATE:19651003T030000
-RDATE:19641004T030000
-RDATE:19631006T030000
-RDATE:19621007T030000
-RDATE:19611001T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521005T030000
-RDATE:19511007T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T000000
-RDATE:19451028T000000
-RDATE:19441029T000000
-RDATE:19431031T000000
-RDATE:19421025T000000
-RDATE:19411006T000000
-RDATE:19401006T000000
-RDATE:19391119T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19241015T000000
-RDATE:19211015T000000
-RDATE:19201015T000000
-RDATE:19191015T000000
-RDATE:19181015T000000
-RDATE:19171015T000000
-RDATE:19161101T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:MADST
-DTSTART:19650404T020000
-RDATE:19650404T020000
-RDATE:19640405T020000
-RDATE:19630407T020000
-RDATE:19620401T020000
-RDATE:19610402T020000
-RDATE:19600403T020000
-RDATE:19590405T020000
-RDATE:19580406T020000
-RDATE:19570407T020000
-RDATE:19560401T020000
-RDATE:19550403T020000
-RDATE:19540404T020000
-RDATE:19530405T020000
-RDATE:19520406T020000
-RDATE:19510401T020000
-RDATE:19490403T020000
-RDATE:19480404T020000
-RDATE:19470406T020000
-RDATE:19460406T230000
-RDATE:19450310T230000
-RDATE:19440311T230000
-RDATE:19430313T230000
-RDATE:19420314T230000
-RDATE:19410405T230000
-RDATE:19400224T230000
-RDATE:19390415T230000
-RDATE:19380326T230000
-RDATE:19370403T230000
-RDATE:19360418T230000
-RDATE:19350330T230000
-RDATE:19340407T230000
-RDATE:19320402T230000
-RDATE:19310418T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19240416T230000
-RDATE:19210228T230000
-RDATE:19200229T230000
-RDATE:19190228T230000
-RDATE:19180301T230000
-RDATE:19170228T230000
-RDATE:19160617T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:MADST
-DTSTART:19450826T000000
-RDATE:19450826T000000
-RDATE:19440827T000000
-RDATE:19430829T000000
-RDATE:19420816T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:MADMT
-DTSTART:19450421T230000
-RDATE:19450421T230000
-RDATE:19440422T230000
-RDATE:19430417T230000
-RDATE:19420425T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0108
-TZOFFSETTO:-0100
-TZNAME:MADT
-DTSTART:19110524T000000
-RDATE:19110524T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0108
-TZOFFSETTO:-0108
-TZNAME:FMT
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Reykjavik.ics b/libical/zoneinfo/Atlantic/Reykjavik.ics
index 4c25274e73..92b234f14b 100644
--- a/libical/zoneinfo/Atlantic/Reykjavik.ics
+++ b/libical/zoneinfo/Atlantic/Reykjavik.ics
@@ -2,102 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Reykjavik
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Reykjavik
 X-LIC-LOCATION:Atlantic/Reykjavik
 BEGIN:STANDARD
-TZOFFSETFROM:-0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19680407T010000
-RDATE:19680407T010000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+0000
-TZOFFSETTO:-0100
-TZNAME:IST
-DTSTART:19671029T020000
-RDATE:19671029T020000
-RDATE:19661023T020000
-RDATE:19651024T020000
-RDATE:19641025T020000
-RDATE:19631027T020000
-RDATE:19621028T020000
-RDATE:19611022T020000
-RDATE:19601023T020000
-RDATE:19591025T020000
-RDATE:19581026T020000
-RDATE:19571027T020000
-RDATE:19561028T020000
-RDATE:19551023T020000
-RDATE:19541024T020000
-RDATE:19531025T020000
-RDATE:19521026T020000
-RDATE:19511028T020000
-RDATE:19501022T020000
-RDATE:19491030T020000
-RDATE:19481024T020000
-RDATE:19471026T020000
-RDATE:19461027T020000
-RDATE:19451028T020000
-RDATE:19441022T020000
-RDATE:19431024T020000
-RDATE:19421025T020000
-RDATE:19411102T020000
-RDATE:19401103T020000
-RDATE:19391129T020000
-RDATE:19181116T010000
-RDATE:19171021T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0100
 TZOFFSETTO:+0000
-TZNAME:ISST
-DTSTART:19670402T010000
-RDATE:19670402T010000
-RDATE:19660403T010000
-RDATE:19650404T010000
-RDATE:19640405T010000
-RDATE:19630407T010000
-RDATE:19620401T010000
-RDATE:19610402T010000
-RDATE:19600403T010000
-RDATE:19590405T010000
-RDATE:19580406T010000
-RDATE:19570407T010000
-RDATE:19560401T010000
-RDATE:19550403T010000
-RDATE:19540404T010000
-RDATE:19530405T010000
-RDATE:19520406T010000
-RDATE:19510401T010000
-RDATE:19500402T010000
-RDATE:19490403T010000
-RDATE:19480404T010000
-RDATE:19470406T010000
-RDATE:19460303T010000
-RDATE:19450304T010000
-RDATE:19440305T010000
-RDATE:19430307T010000
-RDATE:19420308T010000
-RDATE:19410302T010000
-RDATE:19400225T020000
-RDATE:19390429T230000
-RDATE:19180219T230000
-RDATE:19170219T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0128
-TZOFFSETTO:-0100
-TZNAME:IST
-DTSTART:19080101T000000
-RDATE:19080101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0127
-TZOFFSETTO:-0128
-TZNAME:RMT
-DTSTART:18370101T000000
-RDATE:18370101T000000
+TZNAME:GMT
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/South_Georgia.ics b/libical/zoneinfo/Atlantic/South_Georgia.ics
index b530ea0be4..e863c7a38e 100644
--- a/libical/zoneinfo/Atlantic/South_Georgia.ics
+++ b/libical/zoneinfo/Atlantic/South_Georgia.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Atlantic/South_Georgia
+TZID:/softwarestudio.org/Olson_20011030_4/Atlantic/South_Georgia
 X-LIC-LOCATION:Atlantic/South_Georgia
 BEGIN:STANDARD
-TZOFFSETFROM:-0226
+TZOFFSETFROM:-0200
 TZOFFSETTO:-0200
 TZNAME:GST
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/St_Helena.ics b/libical/zoneinfo/Atlantic/St_Helena.ics
index ad3f30f81a..2b8720a8fa 100644
--- a/libical/zoneinfo/Atlantic/St_Helena.ics
+++ b/libical/zoneinfo/Atlantic/St_Helena.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/St_Helena
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/St_Helena
 X-LIC-LOCATION:Atlantic/St_Helena
 BEGIN:STANDARD
-TZOFFSETFROM:-0023
+TZOFFSETFROM:+0000
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19510101T000000
-RDATE:19510101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0023
-TZOFFSETTO:-0023
-TZNAME:JMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Atlantic/Stanley.ics b/libical/zoneinfo/Atlantic/Stanley.ics
index a7147ec039..28c1798b30 100644
--- a/libical/zoneinfo/Atlantic/Stanley.ics
+++ b/libical/zoneinfo/Atlantic/Stanley.ics
@@ -2,119 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Atlantic/Stanley
+TZID:/softwarestudio.org/Olson_20011030_5/Atlantic/Stanley
 X-LIC-LOCATION:Atlantic/Stanley
 BEGIN:STANDARD
 TZOFFSETFROM:-0300
 TZOFFSETTO:-0400
 TZNAME:FKT
-DTSTART:20010415T020000
+DTSTART:19700419T020000
 RRULE:FREQ=YEARLY;BYMONTH=4;BYDAY=3SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0400
 TZOFFSETTO:-0300
 TZNAME:FKST
-DTSTART:20010902T020000
+DTSTART:19700906T020000
 RRULE:FREQ=YEARLY;BYMONTH=9;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:FKST
-DTSTART:20000910T000000
-RDATE:20000910T000000
-RDATE:19990912T000000
-RDATE:19980913T000000
-RDATE:19970914T000000
-RDATE:19960915T000000
-RDATE:19950910T000000
-RDATE:19940911T000000
-RDATE:19930912T000000
-RDATE:19920913T000000
-RDATE:19910915T000000
-RDATE:19900909T000000
-RDATE:19890910T000000
-RDATE:19880911T000000
-RDATE:19870913T000000
-RDATE:19860914T000000
-RDATE:19420927T000000
-RDATE:19410928T000000
-RDATE:19400929T000000
-RDATE:19391001T000000
-RDATE:19380925T000000
-RDATE:19370926T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0400
-TZNAME:FKT
-DTSTART:20000416T000000
-RDATE:20000416T000000
-RDATE:19990418T000000
-RDATE:19980419T000000
-RDATE:19970420T000000
-RDATE:19960421T000000
-RDATE:19950416T000000
-RDATE:19940417T000000
-RDATE:19930418T000000
-RDATE:19920419T000000
-RDATE:19910421T000000
-RDATE:19900422T000000
-RDATE:19890416T000000
-RDATE:19880417T000000
-RDATE:19870419T000000
-RDATE:19860420T000000
-RDATE:19430101T000000
-RDATE:19420322T000000
-RDATE:19410323T000000
-RDATE:19400324T000000
-RDATE:19390319T000000
-RDATE:19380320T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0300
-TZNAME:FKST
-DTSTART:19850915T000000
-RDATE:19850915T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0200
-TZOFFSETTO:-0300
-TZNAME:FKT
-DTSTART:19850428T000000
-RDATE:19850428T000000
-RDATE:19840429T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0300
-TZOFFSETTO:-0200
-TZNAME:FKST
-DTSTART:19840916T000000
-RDATE:19840916T000000
-RDATE:19830925T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0400
-TZOFFSETTO:-0300
-TZNAME:FKT
-DTSTART:19830501T000000
-RDATE:19830501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0351
-TZOFFSETTO:-0400
-TZNAME:FKT
-DTSTART:19120312T000000
-RDATE:19120312T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0351
-TZOFFSETTO:-0351
-TZNAME:SMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Adelaide.ics b/libical/zoneinfo/Australia/Adelaide.ics
index f50b48a812..cabb09a15a 100644
--- a/libical/zoneinfo/Australia/Adelaide.ics
+++ b/libical/zoneinfo/Australia/Adelaide.ics
@@ -2,101 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Adelaide
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Adelaide
 X-LIC-LOCATION:Australia/Adelaide
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0930
 TZOFFSETTO:+1030
 TZNAME:CST
-DTSTART:19871025T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1030
 TZOFFSETTO:+0930
 TZNAME:CST
-DTSTART:19950326T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1030
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19940320T030000
-RDATE:19940320T030000
-RDATE:19930307T030000
-RDATE:19920322T030000
-RDATE:19910303T030000
-RDATE:19900318T030000
-RDATE:19890319T030000
-RDATE:19880320T030000
-RDATE:19870315T030000
-RDATE:19860316T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820307T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750302T030000
-RDATE:19740303T030000
-RDATE:19730304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0930
-TZOFFSETTO:+1030
-TZNAME:CST
-DTSTART:19861019T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0930
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:18990501T000000
-RDATE:18990501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0914
-TZOFFSETTO:+0900
-TZNAME:CST
-DTSTART:18950201T000000
-RDATE:18950201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Brisbane.ics b/libical/zoneinfo/Australia/Brisbane.ics
index 1a681406b4..3bb8d9f2a1 100644
--- a/libical/zoneinfo/Australia/Brisbane.ics
+++ b/libical/zoneinfo/Australia/Brisbane.ics
@@ -2,49 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Brisbane
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Brisbane
 X-LIC-LOCATION:Australia/Brisbane
 BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19920301T030000
-RDATE:19920301T030000
-RDATE:19910303T030000
-RDATE:19900304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:19911027T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:EST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1012
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Broken_Hill.ics b/libical/zoneinfo/Australia/Broken_Hill.ics
index 9782b48b3f..55a4703de4 100644
--- a/libical/zoneinfo/Australia/Broken_Hill.ics
+++ b/libical/zoneinfo/Australia/Broken_Hill.ics
@@ -2,116 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Broken_Hill
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Broken_Hill
 X-LIC-LOCATION:Australia/Broken_Hill
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0930
 TZOFFSETTO:+1030
 TZNAME:CST
-DTSTART:19871025T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1030
 TZOFFSETTO:+0930
 TZNAME:CST
-DTSTART:19960331T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1030
-TZOFFSETTO:+1030
-TZNAME:CST
-DTSTART:20000101T000000
-RDATE:20000101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1030
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19950305T030000
-RDATE:19950305T030000
-RDATE:19940306T030000
-RDATE:19930307T030000
-RDATE:19920301T030000
-RDATE:19910303T030000
-RDATE:19900304T030000
-RDATE:19890319T030000
-RDATE:19880320T030000
-RDATE:19870315T030000
-RDATE:19860316T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820404T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750302T030000
-RDATE:19740303T030000
-RDATE:19730304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0930
-TZOFFSETTO:+1030
-TZNAME:CST
-DTSTART:19861019T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0930
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:18990501T000000
-RDATE:18990501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+0900
-TZNAME:CST
-DTSTART:18960823T000000
-RDATE:18960823T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0926
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950201T000000
-RDATE:18950201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Darwin.ics b/libical/zoneinfo/Australia/Darwin.ics
index 9f506a4127..8cd27abeba 100644
--- a/libical/zoneinfo/Australia/Darwin.ics
+++ b/libical/zoneinfo/Australia/Darwin.ics
@@ -2,41 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Darwin
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Darwin
 X-LIC-LOCATION:Australia/Darwin
 BEGIN:STANDARD
-TZOFFSETFROM:+1030
-TZOFFSETTO:+0930
-TZNAME:CST
-DTSTART:19440326T020000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0930
-TZOFFSETTO:+1030
-TZNAME:CST
-DTSTART:19431003T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
 TZOFFSETTO:+0930
 TZNAME:CST
-DTSTART:18990501T000000
-RDATE:18990501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0843
-TZOFFSETTO:+0900
-TZNAME:CST
-DTSTART:18950201T000000
-RDATE:18950201T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Hobart.ics b/libical/zoneinfo/Australia/Hobart.ics
index 903f4fa980..5320d0e46e 100644
--- a/libical/zoneinfo/Australia/Hobart.ics
+++ b/libical/zoneinfo/Australia/Hobart.ics
@@ -2,119 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Hobart
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Hobart
 X-LIC-LOCATION:Australia/Hobart
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1000
 TZNAME:EST
-DTSTART:19910331T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1100
 TZNAME:EST
-DTSTART:20011007T020000
+DTSTART:19701004T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:20000827T020000
-RDATE:20000827T020000
-RDATE:19991003T020000
-RDATE:19981004T020000
-RDATE:19971005T020000
-RDATE:19961006T020000
-RDATE:19951001T020000
-RDATE:19941002T020000
-RDATE:19931003T020000
-RDATE:19921004T020000
-RDATE:19911006T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19701025T020000
-RDATE:19691026T020000
-RDATE:19681027T020000
-RDATE:19671001T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19161001T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19900318T030000
-RDATE:19900318T030000
-RDATE:19890319T030000
-RDATE:19880320T030000
-RDATE:19870315T030000
-RDATE:19860302T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830327T030000
-RDATE:19820328T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750302T030000
-RDATE:19740303T030000
-RDATE:19730304T030000
-RDATE:19720227T030000
-RDATE:19710314T030000
-RDATE:19700308T030000
-RDATE:19690309T030000
-RDATE:19680331T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19670101T000000
-RDATE:19670101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:19170201T000000
-RDATE:19170201T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0949
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950901T000000
-RDATE:18950901T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Lindeman.ics b/libical/zoneinfo/Australia/Lindeman.ics
index eb388715d3..2b7bf9d7cb 100644
--- a/libical/zoneinfo/Australia/Lindeman.ics
+++ b/libical/zoneinfo/Australia/Lindeman.ics
@@ -2,54 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Lindeman
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Lindeman
 X-LIC-LOCATION:Australia/Lindeman
 BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19940306T030000
-RDATE:19940306T030000
-RDATE:19930307T030000
-RDATE:19920301T030000
-RDATE:19910303T030000
-RDATE:19900304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:19931031T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:EST
-DTSTART:19920701T000000
-RDATE:19920701T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0956
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950101T000000
-RDATE:18950101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Lord_Howe.ics b/libical/zoneinfo/Australia/Lord_Howe.ics
index c6b1649342..14987ad753 100644
--- a/libical/zoneinfo/Australia/Lord_Howe.ics
+++ b/libical/zoneinfo/Australia/Lord_Howe.ics
@@ -2,93 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Lord_Howe
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Lord_Howe
 X-LIC-LOCATION:Australia/Lord_Howe
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1030
 TZNAME:LHST
-DTSTART:19960331T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1030
 TZOFFSETTO:+1100
 TZNAME:LHST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1030
-TZOFFSETTO:+1100
-TZNAME:LHST
-DTSTART:20000827T020000
-RDATE:20000827T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1030
-TZNAME:LHST
-DTSTART:19950305T020000
-RDATE:19950305T020000
-RDATE:19940306T020000
-RDATE:19930307T020000
-RDATE:19920301T020000
-RDATE:19910303T020000
-RDATE:19900304T020000
-RDATE:19890319T020000
-RDATE:19880320T020000
-RDATE:19870315T020000
-RDATE:19860316T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1130
-TZOFFSETTO:+1030
-TZNAME:LHST
-DTSTART:19850303T020000
-RDATE:19850303T020000
-RDATE:19840304T020000
-RDATE:19830306T020000
-RDATE:19820307T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1030
-TZOFFSETTO:+1130
-TZNAME:LHST
-DTSTART:19841028T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1030
-TZNAME:LHST
-DTSTART:19810301T000000
-RDATE:19810301T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1036
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950201T000000
-RDATE:18950201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Melbourne.ics b/libical/zoneinfo/Australia/Melbourne.ics
index 6f5d7ff28b..efe31eaa95 100644
--- a/libical/zoneinfo/Australia/Melbourne.ics
+++ b/libical/zoneinfo/Australia/Melbourne.ics
@@ -2,108 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Melbourne
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Melbourne
 X-LIC-LOCATION:Australia/Melbourne
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1000
 TZNAME:EST
-DTSTART:19950326T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1100
 TZNAME:EST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:20000827T020000
-RDATE:20000827T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871018T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19940306T030000
-RDATE:19940306T030000
-RDATE:19930307T030000
-RDATE:19920301T030000
-RDATE:19910303T030000
-RDATE:19900318T030000
-RDATE:19890319T030000
-RDATE:19880320T030000
-RDATE:19870315T030000
-RDATE:19860316T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820307T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750302T030000
-RDATE:19740303T030000
-RDATE:19730304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0940
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950201T000000
-RDATE:18950201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Perth.ics b/libical/zoneinfo/Australia/Perth.ics
index 267308dc4a..fcabda1b9f 100644
--- a/libical/zoneinfo/Australia/Perth.ics
+++ b/libical/zoneinfo/Australia/Perth.ics
@@ -2,45 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Perth
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Perth
 X-LIC-LOCATION:Australia/Perth
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+0800
-TZNAME:WST
-DTSTART:19920301T030000
-RDATE:19920301T030000
-RDATE:19840304T030000
-RDATE:19750302T030000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0800
-TZOFFSETTO:+0900
-TZNAME:WST
-DTSTART:19911117T020000
-RDATE:19911117T020000
-RDATE:19831030T020000
-RDATE:19741027T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
 TZOFFSETFROM:+0800
 TZOFFSETTO:+0800
 TZNAME:WST
-DTSTART:19430701T000000
-RDATE:19430701T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0743
-TZOFFSETTO:+0800
-TZNAME:WST
-DTSTART:18951201T000000
-RDATE:18951201T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Australia/Sydney.ics b/libical/zoneinfo/Australia/Sydney.ics
index 5fcdace7f8..a429f86abe 100644
--- a/libical/zoneinfo/Australia/Sydney.ics
+++ b/libical/zoneinfo/Australia/Sydney.ics
@@ -2,109 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Australia/Sydney
+TZID:/softwarestudio.org/Olson_20011030_5/Australia/Sydney
 X-LIC-LOCATION:Australia/Sydney
 BEGIN:STANDARD
 TZOFFSETFROM:+1100
 TZOFFSETTO:+1000
 TZNAME:EST
-DTSTART:19960331T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1100
 TZNAME:EST
-DTSTART:20011028T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1100
-TZNAME:EST
-DTSTART:20000827T020000
-RDATE:20000827T020000
-RDATE:19991031T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19951029T020000
-RDATE:19941030T020000
-RDATE:19931031T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861019T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741027T020000
-RDATE:19731028T020000
-RDATE:19721029T020000
-RDATE:19711031T020000
-RDATE:19431003T020000
-RDATE:19420927T020000
-RDATE:19420101T020000
-RDATE:19170101T000100
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19950305T030000
-RDATE:19950305T030000
-RDATE:19940306T030000
-RDATE:19930307T030000
-RDATE:19920301T030000
-RDATE:19910303T030000
-RDATE:19900304T030000
-RDATE:19890319T030000
-RDATE:19880320T030000
-RDATE:19870315T030000
-RDATE:19860316T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820404T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750302T030000
-RDATE:19740303T030000
-RDATE:19730304T030000
-RDATE:19720227T030000
-RDATE:19440326T020000
-RDATE:19430328T020000
-RDATE:19420329T020000
-RDATE:19170325T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1000
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:19710101T000000
-RDATE:19710101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1005
-TZOFFSETTO:+1000
-TZNAME:EST
-DTSTART:18950201T000000
-RDATE:18950201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Amsterdam.ics b/libical/zoneinfo/Europe/Amsterdam.ics
index 2b077722cf..05b28aaba7 100644
--- a/libical/zoneinfo/Europe/Amsterdam.ics
+++ b/libical/zoneinfo/Europe/Amsterdam.ics
@@ -2,163 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Amsterdam
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Amsterdam
 X-LIC-LOCATION:Europe/Amsterdam
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T030000
-RDATE:19770925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19770101T000000
-RDATE:19770101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0020
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19400516T000000
-RDATE:19400516T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0120
-TZOFFSETTO:+0020
-TZNAME:NET
-DTSTART:19391008T030000
-RDATE:19391008T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0020
-TZOFFSETTO:+0120
-TZNAME:NEST
-DTSTART:19390515T020000
-RDATE:19390515T020000
-RDATE:19380515T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0120
-TZOFFSETTO:+0120
-TZNAME:NEST
-DTSTART:19370701T000000
-RDATE:19370701T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0020
-TZOFFSETTO:+0120
-TZNAME:NST
-DTSTART:19370522T020000
-RDATE:19370522T020000
-RDATE:19360515T020000
-RDATE:19350515T020000
-RDATE:19340515T020000
-RDATE:19330515T020000
-RDATE:19320522T020000
-RDATE:19310515T020000
-RDATE:19300515T020000
-RDATE:19290515T020000
-RDATE:19280515T020000
-RDATE:19270515T020000
-RDATE:19260515T020000
-RDATE:19250605T020000
-RDATE:19240330T020000
-RDATE:19230601T020000
-RDATE:19220326T020000
-RDATE:19210404T020000
-RDATE:19200405T020000
-RDATE:19190407T020000
-RDATE:19180401T020000
-RDATE:19170416T020000
-RDATE:19160501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0120
-TZOFFSETTO:+0020
-TZNAME:AMT
-DTSTART:19361004T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T030000
-RDATE:19261003T030000
-RDATE:19251004T030000
-RDATE:19241005T030000
-RDATE:19231007T030000
-RDATE:19221008T030000
-RDATE:19210926T030000
-RDATE:19200927T030000
-RDATE:19190929T030000
-RDATE:19180930T030000
-RDATE:19170917T030000
-RDATE:19161001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0020
-TZOFFSETTO:+0020
-TZNAME:AMT
-DTSTART:18350101T000000
-RDATE:18350101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Andorra.ics b/libical/zoneinfo/Europe/Andorra.ics
index 7bde82bdbc..a2fe393bb2 100644
--- a/libical/zoneinfo/Europe/Andorra.ics
+++ b/libical/zoneinfo/Europe/Andorra.ics
@@ -2,52 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Andorra
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Andorra
 X-LIC-LOCATION:Europe/Andorra
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19850331T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19460930T000000
-RDATE:19460930T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0006
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19010101T000000
-RDATE:19010101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Athens.ics b/libical/zoneinfo/Europe/Athens.ics
index c27580c8ca..09b6ac936c 100644
--- a/libical/zoneinfo/Europe/Athens.ics
+++ b/libical/zoneinfo/Europe/Athens.ics
@@ -2,115 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Athens
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Athens
 X-LIC-LOCATION:Europe/Athens
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19810329T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T040000
-RDATE:19930926T040000
-RDATE:19920927T040000
-RDATE:19910929T040000
-RDATE:19900930T040000
-RDATE:19890924T040000
-RDATE:19880925T040000
-RDATE:19870927T040000
-RDATE:19860928T040000
-RDATE:19850929T040000
-RDATE:19840930T040000
-RDATE:19830925T040000
-RDATE:19820926T040000
-RDATE:19810927T040000
-RDATE:19800928T000000
-RDATE:19790929T020000
-RDATE:19780924T040000
-RDATE:19770926T030000
-RDATE:19761010T030000
-RDATE:19751126T010000
-RDATE:19521102T000000
-RDATE:19320901T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19800401T000000
-RDATE:19800401T000000
-RDATE:19790401T090000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19760411T020000
-RDATE:19750412T000000
-RDATE:19520701T000000
-RDATE:19410407T000000
-RDATE:19320707T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19440404T000000
-RDATE:19440404T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T000000
-RDATE:19431004T000000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19430330T000000
-RDATE:19430330T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410430T000000
-RDATE:19410430T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0135
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19160728T000100
-RDATE:19160728T000100
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0135
-TZOFFSETTO:+0135
-TZNAME:AMT
-DTSTART:18950914T000000
-RDATE:18950914T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Belfast.ics b/libical/zoneinfo/Europe/Belfast.ics
index 9decc88b46..087f154ed4 100644
--- a/libical/zoneinfo/Europe/Belfast.ics
+++ b/libical/zoneinfo/Europe/Belfast.ics
@@ -2,219 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Belfast
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Belfast
 X-LIC-LOCATION:Europe/Belfast
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:BST
-DTSTART:19810329T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19960101T000000
-RDATE:19960101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19951022T020000
-RDATE:19951022T020000
-RDATE:19941023T020000
-RDATE:19931024T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881023T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831023T020000
-RDATE:19821024T020000
-RDATE:19811025T020000
-RDATE:19801026T030000
-RDATE:19791028T030000
-RDATE:19781029T030000
-RDATE:19771023T030000
-RDATE:19761024T030000
-RDATE:19751026T030000
-RDATE:19741027T030000
-RDATE:19731028T030000
-RDATE:19721029T030000
-RDATE:19711031T030000
-RDATE:19671029T030000
-RDATE:19661023T030000
-RDATE:19651024T030000
-RDATE:19641025T030000
-RDATE:19631027T030000
-RDATE:19621028T030000
-RDATE:19611029T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521026T030000
-RDATE:19511021T030000
-RDATE:19501022T030000
-RDATE:19491030T030000
-RDATE:19481031T030000
-RDATE:19471102T030000
-RDATE:19461006T030000
-RDATE:19451007T030000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T030000
-RDATE:19261003T030000
-RDATE:19251004T030000
-RDATE:19240921T030000
-RDATE:19230916T030000
-RDATE:19221008T030000
-RDATE:19211003T030000
-RDATE:19201025T030000
-RDATE:19190929T030000
-RDATE:19180930T030000
-RDATE:19170917T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19800316T020000
-RDATE:19800316T020000
-RDATE:19790318T020000
-RDATE:19780319T020000
-RDATE:19770320T020000
-RDATE:19760321T020000
-RDATE:19750316T020000
-RDATE:19740317T020000
-RDATE:19730318T020000
-RDATE:19720319T020000
-RDATE:19680218T020000
-RDATE:19670319T020000
-RDATE:19660320T020000
-RDATE:19650321T020000
-RDATE:19640322T020000
-RDATE:19630331T020000
-RDATE:19620325T020000
-RDATE:19610326T020000
-RDATE:19600410T020000
-RDATE:19590419T020000
-RDATE:19580420T020000
-RDATE:19570414T020000
-RDATE:19560422T020000
-RDATE:19550417T020000
-RDATE:19540411T020000
-RDATE:19530419T020000
-RDATE:19520420T020000
-RDATE:19510415T020000
-RDATE:19500416T020000
-RDATE:19490403T020000
-RDATE:19480314T020000
-RDATE:19470316T020000
-RDATE:19460414T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380410T020000
-RDATE:19370418T020000
-RDATE:19360419T020000
-RDATE:19350414T020000
-RDATE:19340422T020000
-RDATE:19330409T020000
-RDATE:19320417T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290421T020000
-RDATE:19280422T020000
-RDATE:19270410T020000
-RDATE:19260418T020000
-RDATE:19250419T020000
-RDATE:19240413T020000
-RDATE:19230422T020000
-RDATE:19220326T020000
-RDATE:19210403T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180324T020000
-RDATE:19170408T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19681027T000000
-RDATE:19681027T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19470810T030000
-RDATE:19470810T030000
-RDATE:19450715T030000
-RDATE:19440917T030000
-RDATE:19430815T030000
-RDATE:19420809T030000
-RDATE:19410810T030000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:BDST
-DTSTART:19470413T020000
-RDATE:19470413T020000
-RDATE:19450402T020000
-RDATE:19440402T020000
-RDATE:19430404T020000
-RDATE:19420405T020000
-RDATE:19410504T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0035
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19161001T030000
-RDATE:19161001T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0025
-TZOFFSETTO:+0035
-TZNAME:IST
-DTSTART:19160521T020000
-RDATE:19160521T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0024
-TZOFFSETTO:-0025
-TZNAME:DMT
-DTSTART:18800802T000000
-RDATE:18800802T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Belgrade.ics b/libical/zoneinfo/Europe/Belgrade.ics
index 0304003808..6b2dd4ea76 100644
--- a/libical/zoneinfo/Europe/Belgrade.ics
+++ b/libical/zoneinfo/Europe/Belgrade.ics
@@ -2,68 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Belgrade
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Belgrade
 X-LIC-LOCATION:Europe/Belgrade
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19830327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19821127T000000
-RDATE:19821127T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19450508T020000
-RDATE:19450508T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410418T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Berlin.ics b/libical/zoneinfo/Europe/Berlin.ics
index 9e36b0fb24..9afdbd9846 100644
--- a/libical/zoneinfo/Europe/Berlin.ics
+++ b/libical/zoneinfo/Europe/Berlin.ics
@@ -2,102 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Berlin
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Berlin
 X-LIC-LOCATION:Europe/Berlin
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461007T030000
-RDATE:19451118T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19490410T020000
-RDATE:19480418T020000
-RDATE:19470406T020000
-RDATE:19460414T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19470629T030000
-RDATE:19470629T030000
-RDATE:19450923T030000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:CEMT
-DTSTART:19470511T030000
-RDATE:19470511T030000
-RDATE:19450531T030000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0053
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18930401T000000
-RDATE:18930401T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Bratislava.ics b/libical/zoneinfo/Europe/Bratislava.ics
index 5e35695294..9fb1c273d4 100644
--- a/libical/zoneinfo/Europe/Bratislava.ics
+++ b/libical/zoneinfo/Europe/Bratislava.ics
@@ -2,95 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Bratislava
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Bratislava
 X-LIC-LOCATION:Europe/Bratislava
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T030000
-RDATE:19451118T030000
-RDATE:19440917T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19490409T020000
-RDATE:19480418T020000
-RDATE:19470420T020000
-RDATE:19460506T020000
-RDATE:19450408T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19790101T000000
-RDATE:19790101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0058
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18911001T000000
-RDATE:18911001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0058
-TZOFFSETTO:+0058
-TZNAME:PMT
-DTSTART:18500101T000000
-RDATE:18500101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Brussels.ics b/libical/zoneinfo/Europe/Brussels.ics
index 2296a9a3c5..0eba1ce3d3 100644
--- a/libical/zoneinfo/Europe/Brussels.ics
+++ b/libical/zoneinfo/Europe/Brussels.ics
@@ -2,163 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Brussels
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Brussels
 X-LIC-LOCATION:Europe/Brussels
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T030000
-RDATE:19770925T030000
-RDATE:19461007T030000
-RDATE:19450916T030000
-RDATE:19440917T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19460519T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400520T030000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160501T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19770101T000000
-RDATE:19770101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440903T000000
-RDATE:19440903T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19400225T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380327T020000
-RDATE:19370404T020000
-RDATE:19360419T020000
-RDATE:19350331T020000
-RDATE:19340408T020000
-RDATE:19330326T020000
-RDATE:19320403T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290421T020000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19250404T230000
-RDATE:19240329T230000
-RDATE:19230421T230000
-RDATE:19220325T230000
-RDATE:19210314T230000
-RDATE:19200214T230000
-RDATE:19190301T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19391119T030000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19251004T000000
-RDATE:19241005T000000
-RDATE:19231007T000000
-RDATE:19221008T000000
-RDATE:19211026T000000
-RDATE:19201024T000000
-RDATE:19191005T000000
-RDATE:19181111T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19141108T000000
-RDATE:19141108T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0018
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:18920501T120000
-RDATE:18920501T120000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0018
-TZOFFSETTO:+0018
-TZNAME:BMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Bucharest.ics b/libical/zoneinfo/Europe/Bucharest.ics
index 7bc61b7133..3ab8fda23c 100644
--- a/libical/zoneinfo/Europe/Bucharest.ics
+++ b/libical/zoneinfo/Europe/Bucharest.ics
@@ -2,108 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Bucharest
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Bucharest
 X-LIC-LOCATION:Europe/Bucharest
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19970330T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19971026T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19970101T000000
-RDATE:19970101T000000
-RDATE:19940101T000000
-RDATE:19910101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19961027T000000
-RDATE:19961027T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T010000
-RDATE:19920927T010000
-RDATE:19910929T010000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T010000
-RDATE:19790930T000000
-RDATE:19391001T010000
-RDATE:19381002T010000
-RDATE:19371003T010000
-RDATE:19361004T010000
-RDATE:19351006T010000
-RDATE:19341007T010000
-RDATE:19331001T010000
-RDATE:19321002T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19960331T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-RDATE:19910331T000000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840325T020000
-RDATE:19830327T020000
-RDATE:19820328T020000
-RDATE:19810329T020000
-RDATE:19800405T230000
-RDATE:19790527T000000
-RDATE:19390402T000000
-RDATE:19380403T000000
-RDATE:19370404T000000
-RDATE:19360405T000000
-RDATE:19350407T000000
-RDATE:19340408T000000
-RDATE:19330402T000000
-RDATE:19320521T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0144
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19310724T000000
-RDATE:19310724T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0144
-TZOFFSETTO:+0144
-TZNAME:BMT
-DTSTART:18911001T000000
-RDATE:18911001T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Budapest.ics b/libical/zoneinfo/Europe/Budapest.ics
index 0fe2243187..b833c40e52 100644
--- a/libical/zoneinfo/Europe/Budapest.ics
+++ b/libical/zoneinfo/Europe/Budapest.ics
@@ -2,100 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Budapest
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Budapest
 X-LIC-LOCATION:Europe/Budapest
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19570929T030000
-RDATE:19560930T000000
-RDATE:19551003T000000
-RDATE:19541003T000000
-RDATE:19501023T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T030000
-RDATE:19451103T000000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200930T030000
-RDATE:19190915T030000
-RDATE:19180929T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T010000
-RDATE:19800406T010000
-RDATE:19570602T010000
-RDATE:19560603T000000
-RDATE:19550523T000000
-RDATE:19540523T000000
-RDATE:19500417T020000
-RDATE:19490410T020000
-RDATE:19480404T020000
-RDATE:19470406T020000
-RDATE:19460331T020000
-RDATE:19450501T230000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410406T020000
-RDATE:19200405T030000
-RDATE:19190415T030000
-RDATE:19180401T030000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19180101T000000
-RDATE:19180101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0116
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18901001T000000
-RDATE:18901001T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Chisinau.ics b/libical/zoneinfo/Europe/Chisinau.ics
index 015e725d5e..bca537ef16 100644
--- a/libical/zoneinfo/Europe/Chisinau.ics
+++ b/libical/zoneinfo/Europe/Chisinau.ics
@@ -2,160 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Chisinau
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Chisinau
 X-LIC-LOCATION:Europe/Chisinau
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19970330T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19971026T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19970101T000000
-RDATE:19970101T000000
-RDATE:19920101T000000
-RDATE:19910101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19961027T000000
-RDATE:19961027T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T030000
-RDATE:19900506T000000
-RDATE:19391001T010000
-RDATE:19381002T010000
-RDATE:19371003T010000
-RDATE:19361004T010000
-RDATE:19351006T010000
-RDATE:19341007T010000
-RDATE:19331001T010000
-RDATE:19321002T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19960331T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-RDATE:19910331T020000
-RDATE:19400815T000000
-RDATE:19390402T000000
-RDATE:19380403T000000
-RDATE:19370404T000000
-RDATE:19360405T000000
-RDATE:19350407T000000
-RDATE:19340408T000000
-RDATE:19330402T000000
-RDATE:19320521T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900101T000000
-RDATE:19900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19890924T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19890326T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19440824T000000
-RDATE:19440824T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410717T000000
-RDATE:19410717T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0144
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19310724T000000
-RDATE:19310724T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0155
-TZOFFSETTO:+0144
-TZNAME:BMT
-DTSTART:19180215T000000
-RDATE:19180215T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0155
-TZOFFSETTO:+0155
-TZNAME:CMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Copenhagen.ics b/libical/zoneinfo/Europe/Copenhagen.ics
index 76b378b0a5..73213c093d 100644
--- a/libical/zoneinfo/Europe/Copenhagen.ics
+++ b/libical/zoneinfo/Europe/Copenhagen.ics
@@ -2,87 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Copenhagen
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Copenhagen
 X-LIC-LOCATION:Europe/Copenhagen
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19480808T030000
-RDATE:19470810T030000
-RDATE:19460901T030000
-RDATE:19450815T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19160930T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19480509T020000
-RDATE:19470504T020000
-RDATE:19460501T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400515T000000
-RDATE:19160514T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18940401T000000
-RDATE:18940401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0050
-TZNAME:CMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Dublin.ics b/libical/zoneinfo/Europe/Dublin.ics
index 3e380c44b9..1380acf9df 100644
--- a/libical/zoneinfo/Europe/Dublin.ics
+++ b/libical/zoneinfo/Europe/Dublin.ics
@@ -2,200 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Dublin
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Dublin
 X-LIC-LOCATION:Europe/Dublin
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:IST
-DTSTART:19810329T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19960101T000000
-RDATE:19960101T000000
-RDATE:19211206T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19951022T020000
-RDATE:19951022T020000
-RDATE:19941023T020000
-RDATE:19931024T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881023T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831023T020000
-RDATE:19821024T020000
-RDATE:19811025T020000
-RDATE:19801026T030000
-RDATE:19791028T030000
-RDATE:19781029T030000
-RDATE:19771023T030000
-RDATE:19761024T030000
-RDATE:19751026T030000
-RDATE:19741027T030000
-RDATE:19731028T030000
-RDATE:19721029T030000
-RDATE:19711031T030000
-RDATE:19671029T030000
-RDATE:19661023T030000
-RDATE:19651024T030000
-RDATE:19641025T030000
-RDATE:19631027T030000
-RDATE:19621028T030000
-RDATE:19611029T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521026T030000
-RDATE:19511021T030000
-RDATE:19501022T030000
-RDATE:19491030T030000
-RDATE:19481031T030000
-RDATE:19471102T020000
-RDATE:19461006T020000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T030000
-RDATE:19261003T030000
-RDATE:19251004T030000
-RDATE:19240921T030000
-RDATE:19230916T030000
-RDATE:19221008T030000
-RDATE:19211003T030000
-RDATE:19201025T030000
-RDATE:19190929T030000
-RDATE:19180930T030000
-RDATE:19170917T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:IST
-DTSTART:19800316T020000
-RDATE:19800316T020000
-RDATE:19790318T020000
-RDATE:19780319T020000
-RDATE:19770320T020000
-RDATE:19760321T020000
-RDATE:19750316T020000
-RDATE:19740317T020000
-RDATE:19730318T020000
-RDATE:19720319T020000
-RDATE:19680218T020000
-RDATE:19670319T020000
-RDATE:19660320T020000
-RDATE:19650321T020000
-RDATE:19640322T020000
-RDATE:19630331T020000
-RDATE:19620325T020000
-RDATE:19610326T020000
-RDATE:19600410T020000
-RDATE:19590419T020000
-RDATE:19580420T020000
-RDATE:19570414T020000
-RDATE:19560422T020000
-RDATE:19550417T020000
-RDATE:19540411T020000
-RDATE:19530419T020000
-RDATE:19520420T020000
-RDATE:19510415T020000
-RDATE:19500416T020000
-RDATE:19490403T020000
-RDATE:19480418T020000
-RDATE:19470316T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380410T020000
-RDATE:19370418T020000
-RDATE:19360419T020000
-RDATE:19350414T020000
-RDATE:19340422T020000
-RDATE:19330409T020000
-RDATE:19320417T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290421T020000
-RDATE:19280422T020000
-RDATE:19270410T020000
-RDATE:19260418T020000
-RDATE:19250419T020000
-RDATE:19240413T020000
-RDATE:19230422T020000
-RDATE:19220326T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:IST
-DTSTART:19681027T000000
-RDATE:19681027T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19210403T020000
-RDATE:19210403T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180324T020000
-RDATE:19170408T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0035
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19161001T030000
-RDATE:19161001T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0025
-TZOFFSETTO:+0035
-TZNAME:IST
-DTSTART:19160521T020000
-RDATE:19160521T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0025
-TZOFFSETTO:-0025
-TZNAME:DMT
-DTSTART:18800802T000000
-RDATE:18800802T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Gibraltar.ics b/libical/zoneinfo/Europe/Gibraltar.ics
index dd6d46891d..d3de3c6ce2 100644
--- a/libical/zoneinfo/Europe/Gibraltar.ics
+++ b/libical/zoneinfo/Europe/Gibraltar.ics
@@ -2,170 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Gibraltar
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Gibraltar
 X-LIC-LOCATION:Europe/Gibraltar
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19820328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19820101T000000
-RDATE:19820101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19570414T020000
-RDATE:19570414T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19561007T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521026T030000
-RDATE:19511021T030000
-RDATE:19501022T030000
-RDATE:19491030T030000
-RDATE:19481031T030000
-RDATE:19471102T030000
-RDATE:19461006T030000
-RDATE:19451007T030000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T030000
-RDATE:19261003T030000
-RDATE:19251004T030000
-RDATE:19240921T030000
-RDATE:19230916T030000
-RDATE:19221008T030000
-RDATE:19211003T030000
-RDATE:19201025T030000
-RDATE:19190929T030000
-RDATE:19180930T030000
-RDATE:19170917T030000
-RDATE:19161001T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19560422T020000
-RDATE:19560422T020000
-RDATE:19550417T020000
-RDATE:19540411T020000
-RDATE:19530419T020000
-RDATE:19520420T020000
-RDATE:19510415T020000
-RDATE:19500416T020000
-RDATE:19490403T020000
-RDATE:19480314T020000
-RDATE:19470316T020000
-RDATE:19460414T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380410T020000
-RDATE:19370418T020000
-RDATE:19360419T020000
-RDATE:19350414T020000
-RDATE:19340422T020000
-RDATE:19330409T020000
-RDATE:19320417T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290421T020000
-RDATE:19280422T020000
-RDATE:19270410T020000
-RDATE:19260418T020000
-RDATE:19250419T020000
-RDATE:19240413T020000
-RDATE:19230422T020000
-RDATE:19220326T020000
-RDATE:19210403T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180324T020000
-RDATE:19170408T020000
-RDATE:19160521T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19470810T030000
-RDATE:19470810T030000
-RDATE:19450715T030000
-RDATE:19440917T030000
-RDATE:19430815T030000
-RDATE:19420809T030000
-RDATE:19410810T030000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:BDST
-DTSTART:19470413T020000
-RDATE:19470413T020000
-RDATE:19450402T020000
-RDATE:19440402T020000
-RDATE:19430404T020000
-RDATE:19420405T020000
-RDATE:19410504T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0021
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:18800802T000000
-RDATE:18800802T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Helsinki.ics b/libical/zoneinfo/Europe/Helsinki.ics
index b8dbfcc128..8140fad90d 100644
--- a/libical/zoneinfo/Europe/Helsinki.ics
+++ b/libical/zoneinfo/Europe/Helsinki.ics
@@ -2,71 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Helsinki
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Helsinki
 X-LIC-LOCATION:Europe/Helsinki
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19810329T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T040000
-RDATE:19930926T040000
-RDATE:19920927T040000
-RDATE:19910929T040000
-RDATE:19900930T040000
-RDATE:19890924T040000
-RDATE:19880925T040000
-RDATE:19870927T040000
-RDATE:19860928T040000
-RDATE:19850929T040000
-RDATE:19840930T040000
-RDATE:19830925T040000
-RDATE:19820926T040000
-RDATE:19810927T040000
-RDATE:19421003T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19810329T020000
-RDATE:19810329T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19420403T000000
-RDATE:19420403T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0140
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19210501T000000
-RDATE:19210501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0140
-TZOFFSETTO:+0140
-TZNAME:HMT
-DTSTART:18780531T000000
-RDATE:18780531T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Istanbul.ics b/libical/zoneinfo/Europe/Istanbul.ics
index 489530c103..7619237e33 100644
--- a/libical/zoneinfo/Europe/Istanbul.ics
+++ b/libical/zoneinfo/Europe/Istanbul.ics
@@ -2,160 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Istanbul
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Istanbul
 X-LIC-LOCATION:Europe/Istanbul
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19910331T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T040000
-RDATE:19930926T040000
-RDATE:19920927T040000
-RDATE:19910929T040000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850928T000000
-RDATE:19771016T000000
-RDATE:19761031T000000
-RDATE:19751026T000000
-RDATE:19741103T050000
-RDATE:19731104T030000
-RDATE:19721008T000000
-RDATE:19711003T000000
-RDATE:19701004T000000
-RDATE:19641001T000000
-RDATE:19621008T000000
-RDATE:19511008T000000
-RDATE:19501008T000000
-RDATE:19491002T000000
-RDATE:19481003T000000
-RDATE:19471005T000000
-RDATE:19461001T000000
-RDATE:19451008T000000
-RDATE:19421101T000000
-RDATE:19410921T000000
-RDATE:19401005T000000
-RDATE:19251001T000000
-RDATE:19241001T000000
-RDATE:19221008T000000
-RDATE:19211003T000000
-RDATE:19201025T000000
-RDATE:19161001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19910101T000000
-RDATE:19910101T000000
-RDATE:19860101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19780402T000000
-RDATE:19770403T000000
-RDATE:19760601T000000
-RDATE:19750330T000000
-RDATE:19740331T020000
-RDATE:19730603T010000
-RDATE:19720507T000000
-RDATE:19710502T000000
-RDATE:19700503T000000
-RDATE:19640515T000000
-RDATE:19620715T000000
-RDATE:19510422T000000
-RDATE:19500419T000000
-RDATE:19490410T000000
-RDATE:19480418T000000
-RDATE:19470420T000000
-RDATE:19460601T000000
-RDATE:19450402T000000
-RDATE:19420401T000000
-RDATE:19401201T000000
-RDATE:19400630T000000
-RDATE:19250501T000000
-RDATE:19240513T000000
-RDATE:19220326T000000
-RDATE:19210403T000000
-RDATE:19200328T000000
-RDATE:19160501T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19850420T000000
-RDATE:19850420T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:TRT
-DTSTART:19831002T000000
-RDATE:19831002T000000
-RDATE:19821011T000000
-RDATE:19811012T000000
-RDATE:19801013T000000
-RDATE:19791015T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:TRST
-DTSTART:19830731T000000
-RDATE:19830731T000000
-RDATE:19820328T030000
-RDATE:19810329T030000
-RDATE:19800406T030000
-RDATE:19781015T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:TRST
-DTSTART:19790401T030000
-RDATE:19790401T030000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0157
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19101001T000000
-RDATE:19101001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0156
-TZOFFSETTO:+0157
-TZNAME:IMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Kaliningrad.ics b/libical/zoneinfo/Europe/Kaliningrad.ics
index f2ad47f374..fe19337e78 100644
--- a/libical/zoneinfo/Europe/Kaliningrad.ics
+++ b/libical/zoneinfo/Europe/Kaliningrad.ics
@@ -2,137 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Kaliningrad
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Kaliningrad
 X-LIC-LOCATION:Europe/Kaliningrad
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19460101T000000
-RDATE:19460101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CET
-DTSTART:19451101T000000
-RDATE:19451101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:CEST
-DTSTART:19450429T000000
-RDATE:19450429T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CET
-DTSTART:19450101T000000
-RDATE:19450101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19441002T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18930401T000000
-RDATE:18930401T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Kiev.ics b/libical/zoneinfo/Europe/Kiev.ics
index c51cf3fdf0..79f8df146d 100644
--- a/libical/zoneinfo/Europe/Kiev.ics
+++ b/libical/zoneinfo/Europe/Kiev.ics
@@ -2,136 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Kiev
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Kiev
 X-LIC-LOCATION:Europe/Kiev
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19950326T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19900701T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950101T000000
-RDATE:19950101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19940327T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900101T000000
-RDATE:19900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19890924T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19890326T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19431106T000000
-RDATE:19431106T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19430329T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410920T000000
-RDATE:19410920T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0202
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0202
-TZOFFSETTO:+0202
-TZNAME:KMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Lisbon.ics b/libical/zoneinfo/Europe/Lisbon.ics
index 0b85d6a743..d92a7ec08b 100644
--- a/libical/zoneinfo/Europe/Lisbon.ics
+++ b/libical/zoneinfo/Europe/Lisbon.ics
@@ -2,226 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Lisbon
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Lisbon
 X-LIC-LOCATION:Europe/Lisbon
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:WET
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:WEST
-DTSTART:19970330T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19960331T020000
-RDATE:19960331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19950326T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19920927T020000
-RDATE:19920927T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19920329T010000
-RDATE:19920329T010000
-RDATE:19910331T010000
-RDATE:19900325T010000
-RDATE:19890326T010000
-RDATE:19880327T010000
-RDATE:19870329T010000
-RDATE:19860330T010000
-RDATE:19850331T010000
-RDATE:19840325T010000
-RDATE:19830327T020000
-RDATE:19820328T010000
-RDATE:19810329T010000
-RDATE:19800330T000000
-RDATE:19790401T000000
-RDATE:19780402T000000
-RDATE:19770327T000000
-RDATE:19650404T020000
-RDATE:19640405T020000
-RDATE:19630407T020000
-RDATE:19620401T020000
-RDATE:19610402T020000
-RDATE:19600403T020000
-RDATE:19590405T020000
-RDATE:19580406T020000
-RDATE:19570407T020000
-RDATE:19560401T020000
-RDATE:19550403T020000
-RDATE:19540404T020000
-RDATE:19530405T020000
-RDATE:19520406T020000
-RDATE:19510401T020000
-RDATE:19490403T020000
-RDATE:19480404T020000
-RDATE:19470406T020000
-RDATE:19460406T230000
-RDATE:19450310T230000
-RDATE:19440311T230000
-RDATE:19430313T230000
-RDATE:19420314T230000
-RDATE:19410405T230000
-RDATE:19400224T230000
-RDATE:19390415T230000
-RDATE:19380326T230000
-RDATE:19370403T230000
-RDATE:19360418T230000
-RDATE:19350330T230000
-RDATE:19340407T230000
-RDATE:19320402T230000
-RDATE:19310418T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19240416T230000
-RDATE:19210228T230000
-RDATE:19200229T230000
-RDATE:19190228T230000
-RDATE:19180301T230000
-RDATE:19170228T230000
-RDATE:19160617T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19910929T020000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-RDATE:19800928T020000
-RDATE:19790930T020000
-RDATE:19781001T010000
-RDATE:19770925T010000
-RDATE:19760926T010000
-RDATE:19651003T030000
-RDATE:19641004T030000
-RDATE:19631006T030000
-RDATE:19621007T030000
-RDATE:19611001T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521005T030000
-RDATE:19511007T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T000000
-RDATE:19451028T000000
-RDATE:19441029T000000
-RDATE:19431031T000000
-RDATE:19421025T000000
-RDATE:19411006T000000
-RDATE:19401006T000000
-RDATE:19391119T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19241015T000000
-RDATE:19211015T000000
-RDATE:19201015T000000
-RDATE:19191015T000000
-RDATE:19181015T000000
-RDATE:19171015T000000
-RDATE:19161101T010000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19660403T020000
-RDATE:19660403T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19450826T000000
-RDATE:19450826T000000
-RDATE:19440827T000000
-RDATE:19430829T000000
-RDATE:19420816T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WEMT
-DTSTART:19450421T230000
-RDATE:19450421T230000
-RDATE:19440422T230000
-RDATE:19430417T230000
-RDATE:19420425T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0037
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19110524T000000
-RDATE:19110524T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0037
-TZOFFSETTO:-0037
-TZNAME:LMT
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Ljubljana.ics b/libical/zoneinfo/Europe/Ljubljana.ics
index 2971fe9e06..ef73392182 100644
--- a/libical/zoneinfo/Europe/Ljubljana.ics
+++ b/libical/zoneinfo/Europe/Ljubljana.ics
@@ -2,68 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Ljubljana
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Ljubljana
 X-LIC-LOCATION:Europe/Ljubljana
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19830327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19821127T000000
-RDATE:19821127T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19450508T020000
-RDATE:19450508T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410418T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/London.ics b/libical/zoneinfo/Europe/London.ics
index 57263baccb..acbd57735b 100644
--- a/libical/zoneinfo/Europe/London.ics
+++ b/libical/zoneinfo/Europe/London.ics
@@ -2,207 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/London
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/London
 X-LIC-LOCATION:Europe/London
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0000
 TZOFFSETTO:+0100
 TZNAME:BST
-DTSTART:19810329T010000
+DTSTART:19700329T010000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0000
 TZNAME:GMT
-DTSTART:19961027T020000
+DTSTART:19701025T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19960101T000000
-RDATE:19960101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:19951022T020000
-RDATE:19951022T020000
-RDATE:19941023T020000
-RDATE:19931024T020000
-RDATE:19921025T020000
-RDATE:19911027T020000
-RDATE:19901028T020000
-RDATE:19891029T020000
-RDATE:19881023T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831023T020000
-RDATE:19821024T020000
-RDATE:19811025T020000
-RDATE:19801026T030000
-RDATE:19791028T030000
-RDATE:19781029T030000
-RDATE:19771023T030000
-RDATE:19761024T030000
-RDATE:19751026T030000
-RDATE:19741027T030000
-RDATE:19731028T030000
-RDATE:19721029T030000
-RDATE:19711031T030000
-RDATE:19671029T030000
-RDATE:19661023T030000
-RDATE:19651024T030000
-RDATE:19641025T030000
-RDATE:19631027T030000
-RDATE:19621028T030000
-RDATE:19611029T030000
-RDATE:19601002T030000
-RDATE:19591004T030000
-RDATE:19581005T030000
-RDATE:19571006T030000
-RDATE:19561007T030000
-RDATE:19551002T030000
-RDATE:19541003T030000
-RDATE:19531004T030000
-RDATE:19521026T030000
-RDATE:19511021T030000
-RDATE:19501022T030000
-RDATE:19491030T030000
-RDATE:19481031T030000
-RDATE:19471102T030000
-RDATE:19461006T030000
-RDATE:19451007T030000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T030000
-RDATE:19271002T030000
-RDATE:19261003T030000
-RDATE:19251004T030000
-RDATE:19240921T030000
-RDATE:19230916T030000
-RDATE:19221008T030000
-RDATE:19211003T030000
-RDATE:19201025T030000
-RDATE:19190929T030000
-RDATE:19180930T030000
-RDATE:19170917T030000
-RDATE:19161001T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19800316T020000
-RDATE:19800316T020000
-RDATE:19790318T020000
-RDATE:19780319T020000
-RDATE:19770320T020000
-RDATE:19760321T020000
-RDATE:19750316T020000
-RDATE:19740317T020000
-RDATE:19730318T020000
-RDATE:19720319T020000
-RDATE:19680218T020000
-RDATE:19670319T020000
-RDATE:19660320T020000
-RDATE:19650321T020000
-RDATE:19640322T020000
-RDATE:19630331T020000
-RDATE:19620325T020000
-RDATE:19610326T020000
-RDATE:19600410T020000
-RDATE:19590419T020000
-RDATE:19580420T020000
-RDATE:19570414T020000
-RDATE:19560422T020000
-RDATE:19550417T020000
-RDATE:19540411T020000
-RDATE:19530419T020000
-RDATE:19520420T020000
-RDATE:19510415T020000
-RDATE:19500416T020000
-RDATE:19490403T020000
-RDATE:19480314T020000
-RDATE:19470316T020000
-RDATE:19460414T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380410T020000
-RDATE:19370418T020000
-RDATE:19360419T020000
-RDATE:19350414T020000
-RDATE:19340422T020000
-RDATE:19330409T020000
-RDATE:19320417T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290421T020000
-RDATE:19280422T020000
-RDATE:19270410T020000
-RDATE:19260418T020000
-RDATE:19250419T020000
-RDATE:19240413T020000
-RDATE:19230422T020000
-RDATE:19220326T020000
-RDATE:19210403T020000
-RDATE:19200328T020000
-RDATE:19190330T020000
-RDATE:19180324T020000
-RDATE:19170408T020000
-RDATE:19160521T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19681027T000000
-RDATE:19681027T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:BST
-DTSTART:19470810T030000
-RDATE:19470810T030000
-RDATE:19450715T030000
-RDATE:19440917T030000
-RDATE:19430815T030000
-RDATE:19420809T030000
-RDATE:19410810T030000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:BDST
-DTSTART:19470413T020000
-RDATE:19470413T020000
-RDATE:19450402T020000
-RDATE:19440402T020000
-RDATE:19430404T020000
-RDATE:19420405T020000
-RDATE:19410504T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0001
-TZOFFSETTO:+0000
-TZNAME:GMT
-DTSTART:18471201T000000
-RDATE:18471201T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Luxembourg.ics b/libical/zoneinfo/Europe/Luxembourg.ics
index 72eeb606bf..0e2752a3bf 100644
--- a/libical/zoneinfo/Europe/Luxembourg.ics
+++ b/libical/zoneinfo/Europe/Luxembourg.ics
@@ -2,154 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Luxembourg
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Luxembourg
 X-LIC-LOCATION:Europe/Luxembourg
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T030000
-RDATE:19770925T030000
-RDATE:19461007T030000
-RDATE:19450916T030000
-RDATE:19440918T030000
-RDATE:19180916T030000
-RDATE:19170917T010000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19460519T020000
-RDATE:19450402T020000
-RDATE:19180415T020000
-RDATE:19170428T230000
-RDATE:19160514T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19770101T000000
-RDATE:19770101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400514T030000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19400225T020000
-RDATE:19400225T020000
-RDATE:19390416T020000
-RDATE:19380327T020000
-RDATE:19370404T020000
-RDATE:19360419T020000
-RDATE:19350331T020000
-RDATE:19340408T020000
-RDATE:19330326T020000
-RDATE:19320403T020000
-RDATE:19310419T020000
-RDATE:19300413T020000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19250405T230000
-RDATE:19240329T230000
-RDATE:19230421T230000
-RDATE:19220325T230000
-RDATE:19210314T230000
-RDATE:19200214T230000
-RDATE:19190301T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19391119T030000
-RDATE:19391119T030000
-RDATE:19381002T030000
-RDATE:19371003T030000
-RDATE:19361004T030000
-RDATE:19351006T030000
-RDATE:19341007T030000
-RDATE:19331008T030000
-RDATE:19321002T030000
-RDATE:19311004T030000
-RDATE:19301005T030000
-RDATE:19291006T030000
-RDATE:19281007T010000
-RDATE:19271002T010000
-RDATE:19261003T010000
-RDATE:19251004T010000
-RDATE:19241005T010000
-RDATE:19231007T020000
-RDATE:19221008T010000
-RDATE:19211026T020000
-RDATE:19201024T020000
-RDATE:19191005T030000
-RDATE:19181125T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0025
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19040601T000000
-RDATE:19040601T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Madrid.ics b/libical/zoneinfo/Europe/Madrid.ics
index 6c38317856..8aac0528be 100644
--- a/libical/zoneinfo/Europe/Madrid.ics
+++ b/libical/zoneinfo/Europe/Madrid.ics
@@ -2,135 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Madrid
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Madrid
 X-LIC-LOCATION:Europe/Madrid
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T010000
-RDATE:19770925T010000
-RDATE:19760926T010000
-RDATE:19751005T010000
-RDATE:19741006T010000
-RDATE:19490930T010000
-RDATE:19460930T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T230000
-RDATE:19770402T230000
-RDATE:19760327T230000
-RDATE:19750419T230000
-RDATE:19740413T230000
-RDATE:19490430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19790101T000000
-RDATE:19790101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WEMT
-DTSTART:19460413T230000
-RDATE:19460413T230000
-RDATE:19450414T230000
-RDATE:19440415T230000
-RDATE:19430417T230000
-RDATE:19420502T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19450930T010000
-RDATE:19450930T010000
-RDATE:19441011T000000
-RDATE:19431004T000000
-RDATE:19420902T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19400316T230000
-RDATE:19400316T230000
-RDATE:19390415T230000
-RDATE:19380322T230000
-RDATE:19370522T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19240416T230000
-RDATE:19190405T230000
-RDATE:19180415T230000
-RDATE:19170505T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19391008T000000
-RDATE:19391008T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19241005T000000
-RDATE:19191007T000000
-RDATE:19181007T000000
-RDATE:19171007T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0015
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19010101T000000
-RDATE:19010101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Malta.ics b/libical/zoneinfo/Europe/Malta.ics
index d185c160f7..6744fd9a12 100644
--- a/libical/zoneinfo/Europe/Malta.ics
+++ b/libical/zoneinfo/Europe/Malta.ics
@@ -2,116 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Malta
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Malta
 X-LIC-LOCATION:Europe/Malta
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800921T020000
-RDATE:19790916T020000
-RDATE:19780917T020000
-RDATE:19770918T020000
-RDATE:19760919T020000
-RDATE:19750921T020000
-RDATE:19740916T010000
-RDATE:19730929T010000
-RDATE:19721001T000000
-RDATE:19710926T010000
-RDATE:19700927T000000
-RDATE:19690928T000000
-RDATE:19680922T000000
-RDATE:19670924T000000
-RDATE:19660925T000000
-RDATE:19481003T030000
-RDATE:19471005T010000
-RDATE:19461006T030000
-RDATE:19450915T010000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200919T010000
-RDATE:19191005T010000
-RDATE:19181006T010000
-RDATE:19170930T010000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800331T020000
-RDATE:19800331T020000
-RDATE:19790415T020000
-RDATE:19780416T020000
-RDATE:19770417T020000
-RDATE:19760418T020000
-RDATE:19750420T020000
-RDATE:19740421T000000
-RDATE:19730331T000000
-RDATE:19720528T000000
-RDATE:19710523T000000
-RDATE:19700531T000000
-RDATE:19690601T000000
-RDATE:19680526T000000
-RDATE:19670528T000000
-RDATE:19660522T000000
-RDATE:19480229T020000
-RDATE:19470316T000000
-RDATE:19460317T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400615T000000
-RDATE:19200321T000000
-RDATE:19190302T000000
-RDATE:19180310T000000
-RDATE:19170401T000000
-RDATE:19160603T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0058
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18931102T000000
-RDATE:18931102T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Minsk.ics b/libical/zoneinfo/Europe/Minsk.ics
index 158026b494..01fd41bd52 100644
--- a/libical/zoneinfo/Europe/Minsk.ics
+++ b/libical/zoneinfo/Europe/Minsk.ics
@@ -2,128 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Minsk
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Minsk
 X-LIC-LOCATION:Europe/Minsk
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T010000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19920329T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900101T000000
-RDATE:19900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19890924T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19890326T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19440703T000000
-RDATE:19440703T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410628T000000
-RDATE:19410628T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0150
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0150
-TZOFFSETTO:+0150
-TZNAME:MMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Monaco.ics b/libical/zoneinfo/Europe/Monaco.ics
index 61f5e6afd3..343d740d88 100644
--- a/libical/zoneinfo/Europe/Monaco.ics
+++ b/libical/zoneinfo/Europe/Monaco.ics
@@ -2,162 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Monaco
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Monaco
 X-LIC-LOCATION:Europe/Monaco
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T030000
-RDATE:19770925T030000
-RDATE:19760926T010000
-RDATE:19450916T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19760328T010000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19770101T000000
-RDATE:19770101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WEMT
-DTSTART:19450402T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19420309T000000
-RDATE:19410505T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19441008T010000
-RDATE:19441008T010000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19411006T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19400225T020000
-RDATE:19400225T020000
-RDATE:19390415T230000
-RDATE:19380326T230000
-RDATE:19370403T230000
-RDATE:19360418T230000
-RDATE:19350330T230000
-RDATE:19340407T230000
-RDATE:19330325T230000
-RDATE:19320402T230000
-RDATE:19310418T230000
-RDATE:19300412T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19250404T230000
-RDATE:19240329T230000
-RDATE:19230526T230000
-RDATE:19220325T230000
-RDATE:19210314T230000
-RDATE:19200214T230000
-RDATE:19190301T230000
-RDATE:19180309T230000
-RDATE:19170324T230000
-RDATE:19160614T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19391119T000000
-RDATE:19391119T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19331008T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19301005T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19251004T000000
-RDATE:19241005T000000
-RDATE:19231007T000000
-RDATE:19221008T000000
-RDATE:19211026T000000
-RDATE:19201024T000000
-RDATE:19191006T000000
-RDATE:19181007T000000
-RDATE:19171008T000000
-RDATE:19161002T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0009
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19110311T000000
-RDATE:19110311T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0030
-TZOFFSETTO:+0009
-TZNAME:PMT
-DTSTART:18910315T000000
-RDATE:18910315T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Moscow.ics b/libical/zoneinfo/Europe/Moscow.ics
index 764ed55123..5547514743 100644
--- a/libical/zoneinfo/Europe/Moscow.ics
+++ b/libical/zoneinfo/Europe/Moscow.ics
@@ -2,154 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Moscow
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Moscow
 X-LIC-LOCATION:Europe/Moscow
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0400
 TZNAME:MSD
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0300
 TZNAME:MSK
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-RDATE:19211001T000000
-RDATE:19190816T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19920328T230000
-RDATE:19920328T230000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-RDATE:19210214T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19920119T020000
-RDATE:19920119T020000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19910929T030000
-RDATE:19910929T030000
-RDATE:19221001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19210901T000000
-RDATE:19210901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:MSD
-DTSTART:19210320T230000
-RDATE:19210320T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0431
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19190701T020000
-RDATE:19190701T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0331
-TZOFFSETTO:+0431
-TZNAME:MDST
-DTSTART:19190531T230000
-RDATE:19190531T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0431
-TZOFFSETTO:+0331
-TZNAME:MST
-DTSTART:19180916T010000
-RDATE:19180916T010000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0231
-TZOFFSETTO:+0431
-TZNAME:MDST
-DTSTART:19180531T220000
-RDATE:19180531T220000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0331
-TZOFFSETTO:+0231
-TZNAME:MMT
-DTSTART:19171228T000000
-RDATE:19171228T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0231
-TZOFFSETTO:+0331
-TZNAME:MST
-DTSTART:19170701T230000
-RDATE:19170701T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0230
-TZOFFSETTO:+0231
-TZNAME:MMT
-DTSTART:19160703T000000
-RDATE:19160703T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0230
-TZOFFSETTO:+0230
-TZNAME:MMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Nicosia.ics b/libical/zoneinfo/Europe/Nicosia.ics
index 3d69a7ebfc..a373db63c1 100644
--- a/libical/zoneinfo/Europe/Nicosia.ics
+++ b/libical/zoneinfo/Europe/Nicosia.ics
@@ -2,94 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Nicosia
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Nicosia
 X-LIC-LOCATION:Europe/Nicosia
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19981025T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19990328T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980901T000000
-RDATE:19980901T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980329T000000
-RDATE:19980329T000000
-RDATE:19970330T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-RDATE:19910331T000000
-RDATE:19900325T000000
-RDATE:19890326T000000
-RDATE:19880327T000000
-RDATE:19870329T000000
-RDATE:19860330T000000
-RDATE:19850331T000000
-RDATE:19840325T000000
-RDATE:19830327T000000
-RDATE:19820328T000000
-RDATE:19810329T000000
-RDATE:19800406T000000
-RDATE:19790401T000000
-RDATE:19780402T000000
-RDATE:19770403T000000
-RDATE:19760515T000000
-RDATE:19750413T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19970928T000000
-RDATE:19970928T000000
-RDATE:19960929T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T000000
-RDATE:19900930T000000
-RDATE:19890924T000000
-RDATE:19880925T000000
-RDATE:19870927T000000
-RDATE:19860928T000000
-RDATE:19850929T000000
-RDATE:19840930T000000
-RDATE:19830925T000000
-RDATE:19820926T000000
-RDATE:19810927T000000
-RDATE:19800928T000000
-RDATE:19790930T000000
-RDATE:19781002T000000
-RDATE:19770925T000000
-RDATE:19761011T000000
-RDATE:19751012T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0213
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19211114T000000
-RDATE:19211114T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Oslo.ics b/libical/zoneinfo/Europe/Oslo.ics
index 818ee44156..f8df7ef97c 100644
--- a/libical/zoneinfo/Europe/Oslo.ics
+++ b/libical/zoneinfo/Europe/Oslo.ics
@@ -2,88 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Oslo
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Oslo
 X-LIC-LOCATION:Europe/Oslo
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19650919T030000
-RDATE:19640920T030000
-RDATE:19630915T030000
-RDATE:19620916T030000
-RDATE:19610917T030000
-RDATE:19600918T030000
-RDATE:19590920T030000
-RDATE:19451001T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19160930T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19650425T020000
-RDATE:19640315T020000
-RDATE:19630317T020000
-RDATE:19620318T020000
-RDATE:19610319T020000
-RDATE:19600320T020000
-RDATE:19590315T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400810T230000
-RDATE:19160522T010000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0043
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Paris.ics b/libical/zoneinfo/Europe/Paris.ics
index 4afdde2c6d..b8c8d3ded7 100644
--- a/libical/zoneinfo/Europe/Paris.ics
+++ b/libical/zoneinfo/Europe/Paris.ics
@@ -2,167 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Paris
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Paris
 X-LIC-LOCATION:Europe/Paris
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19781001T030000
-RDATE:19770925T030000
-RDATE:19760926T010000
-RDATE:19450916T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19780402T020000
-RDATE:19770403T020000
-RDATE:19760328T010000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400614T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19770101T000000
-RDATE:19770101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:WEMT
-DTSTART:19450402T020000
-RDATE:19450402T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19441008T010000
-RDATE:19441008T010000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:WEMT
-DTSTART:19440825T000000
-RDATE:19440825T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0000
-TZOFFSETTO:+0100
-TZNAME:WEST
-DTSTART:19400225T020000
-RDATE:19400225T020000
-RDATE:19390415T230000
-RDATE:19380326T230000
-RDATE:19370403T230000
-RDATE:19360418T230000
-RDATE:19350330T230000
-RDATE:19340407T230000
-RDATE:19330325T230000
-RDATE:19320402T230000
-RDATE:19310418T230000
-RDATE:19300412T230000
-RDATE:19290420T230000
-RDATE:19280414T230000
-RDATE:19270409T230000
-RDATE:19260417T230000
-RDATE:19250404T230000
-RDATE:19240329T230000
-RDATE:19230526T230000
-RDATE:19220325T230000
-RDATE:19210314T230000
-RDATE:19200214T230000
-RDATE:19190301T230000
-RDATE:19180309T230000
-RDATE:19170324T230000
-RDATE:19160614T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19391119T000000
-RDATE:19391119T000000
-RDATE:19381002T000000
-RDATE:19371003T000000
-RDATE:19361004T000000
-RDATE:19351006T000000
-RDATE:19341007T000000
-RDATE:19331008T000000
-RDATE:19321002T000000
-RDATE:19311004T000000
-RDATE:19301005T000000
-RDATE:19291006T000000
-RDATE:19281007T000000
-RDATE:19271002T000000
-RDATE:19261003T000000
-RDATE:19251004T000000
-RDATE:19241005T000000
-RDATE:19231007T000000
-RDATE:19221008T000000
-RDATE:19211026T000000
-RDATE:19201024T000000
-RDATE:19191006T000000
-RDATE:19181007T000000
-RDATE:19171008T000000
-RDATE:19161002T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0009
-TZOFFSETTO:+0000
-TZNAME:WET
-DTSTART:19110311T000100
-RDATE:19110311T000100
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0009
-TZOFFSETTO:+0009
-TZNAME:PMT
-DTSTART:18910315T000100
-RDATE:18910315T000100
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Prague.ics b/libical/zoneinfo/Europe/Prague.ics
index 20c41243fc..03005ff199 100644
--- a/libical/zoneinfo/Europe/Prague.ics
+++ b/libical/zoneinfo/Europe/Prague.ics
@@ -2,95 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Prague
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Prague
 X-LIC-LOCATION:Europe/Prague
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T030000
-RDATE:19491002T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T030000
-RDATE:19451118T030000
-RDATE:19440917T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790401T020000
-RDATE:19490409T020000
-RDATE:19480418T020000
-RDATE:19470420T020000
-RDATE:19460506T020000
-RDATE:19450408T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19790101T000000
-RDATE:19790101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0058
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18911001T000000
-RDATE:18911001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0058
-TZOFFSETTO:+0058
-TZNAME:PMT
-DTSTART:18500101T000000
-RDATE:18500101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Riga.ics b/libical/zoneinfo/Europe/Riga.ics
index 2940d941ac..4bc1003b1f 100644
--- a/libical/zoneinfo/Europe/Riga.ics
+++ b/libical/zoneinfo/Europe/Riga.ics
@@ -2,166 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Riga
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Riga
 X-LIC-LOCATION:Europe/Riga
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:20010325T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:20011028T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:20010101T000000
-RDATE:20010101T000000
-RDATE:20000229T000000
-RDATE:19970121T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19991031T040000
-RDATE:19991031T040000
-RDATE:19981025T040000
-RDATE:19971026T040000
-RDATE:19960929T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19990328T030000
-RDATE:19990328T030000
-RDATE:19980329T030000
-RDATE:19970330T030000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-RDATE:19910331T020000
-RDATE:19900325T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19890326T020000
-RDATE:19890326T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19880925T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19880327T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19441013T000000
-RDATE:19441013T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19441002T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410701T000000
-RDATE:19410701T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19400805T000000
-RDATE:19400805T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0136
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19260511T000000
-RDATE:19260511T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0236
-TZOFFSETTO:+0136
-TZNAME:RMT
-DTSTART:19190522T030000
-RDATE:19190522T030000
-RDATE:19180916T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0136
-TZOFFSETTO:+0236
-TZNAME:LST
-DTSTART:19190401T020000
-RDATE:19190401T020000
-RDATE:19180415T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0136
-TZOFFSETTO:+0136
-TZNAME:RMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Rome.ics b/libical/zoneinfo/Europe/Rome.ics
index e79fb6462c..67f306e4cd 100644
--- a/libical/zoneinfo/Europe/Rome.ics
+++ b/libical/zoneinfo/Europe/Rome.ics
@@ -2,130 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Rome
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Rome
 X-LIC-LOCATION:Europe/Rome
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T010000
-RDATE:19781001T010000
-RDATE:19770925T010000
-RDATE:19760926T010000
-RDATE:19750928T010000
-RDATE:19740929T000000
-RDATE:19730930T000000
-RDATE:19721001T000000
-RDATE:19710926T010000
-RDATE:19700927T000000
-RDATE:19690928T000000
-RDATE:19680922T000000
-RDATE:19670924T000000
-RDATE:19660925T000000
-RDATE:19481003T030000
-RDATE:19471005T010000
-RDATE:19461006T030000
-RDATE:19450915T010000
-RDATE:19440917T010000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200919T010000
-RDATE:19191005T010000
-RDATE:19181006T010000
-RDATE:19170930T010000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790527T000000
-RDATE:19780528T000000
-RDATE:19770522T000000
-RDATE:19760530T000000
-RDATE:19750601T000000
-RDATE:19740526T000000
-RDATE:19730603T000000
-RDATE:19720528T000000
-RDATE:19710523T000000
-RDATE:19700531T000000
-RDATE:19690601T000000
-RDATE:19680526T000000
-RDATE:19670528T000000
-RDATE:19660522T000000
-RDATE:19480229T020000
-RDATE:19470316T000000
-RDATE:19460317T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400615T000000
-RDATE:19200321T000000
-RDATE:19190302T000000
-RDATE:19180310T000000
-RDATE:19170401T000000
-RDATE:19160603T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440701T000000
-RDATE:19440701T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18931101T000000
-RDATE:18931101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0050
-TZNAME:RMT
-DTSTART:18660922T000000
-RDATE:18660922T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Samara.ics b/libical/zoneinfo/Europe/Samara.ics
index 5aa8feec6f..718be0d712 100644
--- a/libical/zoneinfo/Europe/Samara.ics
+++ b/libical/zoneinfo/Europe/Samara.ics
@@ -2,123 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Samara
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Samara
 X-LIC-LOCATION:Europe/Samara
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0400
 TZOFFSETTO:+0500
 TZNAME:SAMST
-DTSTART:19930328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0500
 TZOFFSETTO:+0400
 TZNAME:SAMT
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:SAMT
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920926T230000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:SAMST
-DTSTART:19920328T230000
-RDATE:19920328T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:SAMT
-DTSTART:19911020T030000
-RDATE:19911020T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:KUYT
-DTSTART:19910929T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:KUYST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:KUYT
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:KUYST
-DTSTART:19900325T020000
-RDATE:19900325T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:KUYST
-DTSTART:19890326T020000
-RDATE:19890326T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0500
-TZOFFSETTO:+0400
-TZNAME:KUYT
-DTSTART:19880925T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0500
-TZNAME:KUYST
-DTSTART:19880327T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:KUYT
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0321
-TZOFFSETTO:+0300
-TZNAME:KUYT
-DTSTART:19190701T020000
-RDATE:19190701T020000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/San_Marino.ics b/libical/zoneinfo/Europe/San_Marino.ics
index bab7bbc49e..ab180f4a99 100644
--- a/libical/zoneinfo/Europe/San_Marino.ics
+++ b/libical/zoneinfo/Europe/San_Marino.ics
@@ -2,130 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/San_Marino
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/San_Marino
 X-LIC-LOCATION:Europe/San_Marino
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T010000
-RDATE:19781001T010000
-RDATE:19770925T010000
-RDATE:19760926T010000
-RDATE:19750928T010000
-RDATE:19740929T000000
-RDATE:19730930T000000
-RDATE:19721001T000000
-RDATE:19710926T010000
-RDATE:19700927T000000
-RDATE:19690928T000000
-RDATE:19680922T000000
-RDATE:19670924T000000
-RDATE:19660925T000000
-RDATE:19481003T030000
-RDATE:19471005T010000
-RDATE:19461006T030000
-RDATE:19450915T010000
-RDATE:19440917T010000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200919T010000
-RDATE:19191005T010000
-RDATE:19181006T010000
-RDATE:19170930T010000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790527T000000
-RDATE:19780528T000000
-RDATE:19770522T000000
-RDATE:19760530T000000
-RDATE:19750601T000000
-RDATE:19740526T000000
-RDATE:19730603T000000
-RDATE:19720528T000000
-RDATE:19710523T000000
-RDATE:19700531T000000
-RDATE:19690601T000000
-RDATE:19680526T000000
-RDATE:19670528T000000
-RDATE:19660522T000000
-RDATE:19480229T020000
-RDATE:19470316T000000
-RDATE:19460317T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400615T000000
-RDATE:19200321T000000
-RDATE:19190302T000000
-RDATE:19180310T000000
-RDATE:19170401T000000
-RDATE:19160603T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440701T000000
-RDATE:19440701T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18931101T000000
-RDATE:18931101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0050
-TZNAME:RMT
-DTSTART:18660922T000000
-RDATE:18660922T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Sarajevo.ics b/libical/zoneinfo/Europe/Sarajevo.ics
index 57363777a3..00e38a49de 100644
--- a/libical/zoneinfo/Europe/Sarajevo.ics
+++ b/libical/zoneinfo/Europe/Sarajevo.ics
@@ -2,68 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Sarajevo
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Sarajevo
 X-LIC-LOCATION:Europe/Sarajevo
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19830327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19821127T000000
-RDATE:19821127T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19450508T020000
-RDATE:19450508T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410418T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Simferopol.ics b/libical/zoneinfo/Europe/Simferopol.ics
index fc69b3fd33..fdbdb1fe6a 100644
--- a/libical/zoneinfo/Europe/Simferopol.ics
+++ b/libical/zoneinfo/Europe/Simferopol.ics
@@ -2,149 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Simferopol
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Simferopol
 X-LIC-LOCATION:Europe/Simferopol
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19971026T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19980329T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19970330T040000
-RDATE:19970330T040000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19970101T000000
-RDATE:19970101T000000
-RDATE:19900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19961027T040000
-RDATE:19961027T040000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19960331T040000
-RDATE:19960331T040000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19960331T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940501T000000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19940327T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19930926T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19900701T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19920101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19440413T000000
-RDATE:19440413T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19411101T000000
-RDATE:19411101T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0216
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0216
-TZOFFSETTO:+0216
-TZNAME:SMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Skopje.ics b/libical/zoneinfo/Europe/Skopje.ics
index 633da380d8..77dd80edb7 100644
--- a/libical/zoneinfo/Europe/Skopje.ics
+++ b/libical/zoneinfo/Europe/Skopje.ics
@@ -2,68 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Skopje
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Skopje
 X-LIC-LOCATION:Europe/Skopje
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19830327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19821127T000000
-RDATE:19821127T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19450508T020000
-RDATE:19450508T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410418T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Sofia.ics b/libical/zoneinfo/Europe/Sofia.ics
index 65063c29cb..63bd0685fa 100644
--- a/libical/zoneinfo/Europe/Sofia.ics
+++ b/libical/zoneinfo/Europe/Sofia.ics
@@ -2,122 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Sofia
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Sofia
 X-LIC-LOCATION:Europe/Sofia
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19970330T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19971026T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19970101T000000
-RDATE:19970101T000000
-RDATE:19910101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19961027T000000
-RDATE:19961027T000000
-RDATE:19950924T000000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T000000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T020000
-RDATE:19800929T010000
-RDATE:19791001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19960331T000000
-RDATE:19960331T000000
-RDATE:19950326T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-RDATE:19910331T000000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840325T020000
-RDATE:19830327T020000
-RDATE:19820403T230000
-RDATE:19810404T230000
-RDATE:19800405T230000
-RDATE:19790331T230000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19820926T020000
-RDATE:19820926T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19450402T030000
-RDATE:19450402T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19441002T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0157
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:18941130T000000
-RDATE:18941130T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0133
-TZOFFSETTO:+0157
-TZNAME:IMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Stockholm.ics b/libical/zoneinfo/Europe/Stockholm.ics
index 53163196f1..35634a3d85 100644
--- a/libical/zoneinfo/Europe/Stockholm.ics
+++ b/libical/zoneinfo/Europe/Stockholm.ics
@@ -2,67 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Stockholm
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Stockholm
 X-LIC-LOCATION:Europe/Stockholm
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19160514T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-RDATE:19000101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0112
-TZOFFSETTO:+0100
-TZNAME:SET
-DTSTART:18790101T000000
-RDATE:18790101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Tallinn.ics b/libical/zoneinfo/Europe/Tallinn.ics
index 4782781871..a12a3ee1bd 100644
--- a/libical/zoneinfo/Europe/Tallinn.ics
+++ b/libical/zoneinfo/Europe/Tallinn.ics
@@ -2,144 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Tallinn
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Tallinn
 X-LIC-LOCATION:Europe/Tallinn
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19991101T000000
-RDATE:19991101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19991031T040000
-RDATE:19991031T040000
-RDATE:19981025T040000
-RDATE:19971026T030000
-RDATE:19961027T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19990328T030000
-RDATE:19990328T030000
-RDATE:19980329T020000
-RDATE:19970330T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-RDATE:19910331T020000
-RDATE:19900325T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19980922T000000
-RDATE:19980922T000000
-RDATE:19890326T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19880925T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19880327T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19440922T000000
-RDATE:19440922T000000
-RDATE:19400806T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19180415T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19180916T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410915T000000
-RDATE:19410915T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0139
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19210501T000000
-RDATE:19210501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0139
-TZNAME:TMT
-DTSTART:19190701T000000
-RDATE:19190701T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0139
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19180201T000000
-RDATE:19180201T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0139
-TZOFFSETTO:+0139
-TZNAME:TMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Tirane.ics b/libical/zoneinfo/Europe/Tirane.ics
index e89708d44f..cfd39e0dc4 100644
--- a/libical/zoneinfo/Europe/Tirane.ics
+++ b/libical/zoneinfo/Europe/Tirane.ics
@@ -2,84 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Tirane
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Tirane
 X-LIC-LOCATION:Europe/Tirane
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19850331T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821003T000000
-RDATE:19810927T000000
-RDATE:19801004T000000
-RDATE:19790930T000000
-RDATE:19781001T000000
-RDATE:19771002T000000
-RDATE:19761003T000000
-RDATE:19751002T000000
-RDATE:19741002T000000
-RDATE:19430410T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19840701T000000
-RDATE:19840701T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19840401T000000
-RDATE:19840401T000000
-RDATE:19830418T000000
-RDATE:19820502T000000
-RDATE:19810426T000000
-RDATE:19800503T000000
-RDATE:19790505T000000
-RDATE:19780506T000000
-RDATE:19770508T000000
-RDATE:19760502T000000
-RDATE:19750501T000000
-RDATE:19740504T000000
-RDATE:19430329T020000
-RDATE:19400616T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0119
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19140101T000000
-RDATE:19140101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Uzhgorod.ics b/libical/zoneinfo/Europe/Uzhgorod.ics
index b7c4175c61..34da5adcb1 100644
--- a/libical/zoneinfo/Europe/Uzhgorod.ics
+++ b/libical/zoneinfo/Europe/Uzhgorod.ics
@@ -2,145 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Uzhgorod
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Uzhgorod
 X-LIC-LOCATION:Europe/Uzhgorod
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19950326T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950101T000000
-RDATE:19950101T000000
-RDATE:19920101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19940327T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19910331T030000
-RDATE:19910331T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19900701T020000
-RDATE:19900701T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900101T000000
-RDATE:19900101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19890924T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19890326T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19450629T000000
-RDATE:19450629T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19441026T000000
-RDATE:19441026T000000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19441001T000000
-RDATE:19441001T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440403T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19400101T000000
-RDATE:19400101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0129
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18901001T000000
-RDATE:18901001T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Vaduz.ics b/libical/zoneinfo/Europe/Vaduz.ics
index d978ea9de8..aa25589816 100644
--- a/libical/zoneinfo/Europe/Vaduz.ics
+++ b/libical/zoneinfo/Europe/Vaduz.ics
@@ -2,56 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Vaduz
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Vaduz
 X-LIC-LOCATION:Europe/Vaduz
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0038
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18940601T000000
-RDATE:18940601T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Vatican.ics b/libical/zoneinfo/Europe/Vatican.ics
index c830ab2cdd..411dac53af 100644
--- a/libical/zoneinfo/Europe/Vatican.ics
+++ b/libical/zoneinfo/Europe/Vatican.ics
@@ -2,130 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Vatican
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Vatican
 X-LIC-LOCATION:Europe/Vatican
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19800928T030000
-RDATE:19790930T010000
-RDATE:19781001T010000
-RDATE:19770925T010000
-RDATE:19760926T010000
-RDATE:19750928T010000
-RDATE:19740929T000000
-RDATE:19730930T000000
-RDATE:19721001T000000
-RDATE:19710926T010000
-RDATE:19700927T000000
-RDATE:19690928T000000
-RDATE:19680922T000000
-RDATE:19670924T000000
-RDATE:19660925T000000
-RDATE:19481003T030000
-RDATE:19471005T010000
-RDATE:19461006T030000
-RDATE:19450915T010000
-RDATE:19440917T010000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200919T010000
-RDATE:19191005T010000
-RDATE:19181006T010000
-RDATE:19170930T010000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19800406T020000
-RDATE:19800406T020000
-RDATE:19790527T000000
-RDATE:19780528T000000
-RDATE:19770522T000000
-RDATE:19760530T000000
-RDATE:19750601T000000
-RDATE:19740526T000000
-RDATE:19730603T000000
-RDATE:19720528T000000
-RDATE:19710523T000000
-RDATE:19700531T000000
-RDATE:19690601T000000
-RDATE:19680526T000000
-RDATE:19670528T000000
-RDATE:19660522T000000
-RDATE:19480229T020000
-RDATE:19470316T000000
-RDATE:19460317T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400615T000000
-RDATE:19200321T000000
-RDATE:19190302T000000
-RDATE:19180310T000000
-RDATE:19170401T000000
-RDATE:19160603T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19800101T000000
-RDATE:19800101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19440701T000000
-RDATE:19440701T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18931101T000000
-RDATE:18931101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0050
-TZOFFSETTO:+0050
-TZNAME:RMT
-DTSTART:18660922T000000
-RDATE:18660922T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Vienna.ics b/libical/zoneinfo/Europe/Vienna.ics
index dbdf28c23a..3d808d7650 100644
--- a/libical/zoneinfo/Europe/Vienna.ics
+++ b/libical/zoneinfo/Europe/Vienna.ics
@@ -2,84 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Vienna
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Vienna
 X-LIC-LOCATION:Europe/Vienna
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19481003T030000
-RDATE:19471005T030000
-RDATE:19461006T030000
-RDATE:19451118T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19200913T030000
-RDATE:19180616T030000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19480418T020000
-RDATE:19480418T020000
-RDATE:19470406T020000
-RDATE:19460414T020000
-RDATE:19450402T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400401T020000
-RDATE:19200405T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0105
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18930401T000000
-RDATE:18930401T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Vilnius.ics b/libical/zoneinfo/Europe/Vilnius.ics
index a005a63070..cfdd2053fd 100644
--- a/libical/zoneinfo/Europe/Vilnius.ics
+++ b/libical/zoneinfo/Europe/Vilnius.ics
@@ -2,154 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Vilnius
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Vilnius
 X-LIC-LOCATION:Europe/Vilnius
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19991031T030000
-RDATE:19991031T030000
-RDATE:19980101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19990328T020000
-RDATE:19990328T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19981025T030000
-RDATE:19981025T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19201009T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19980329T030000
-RDATE:19980329T030000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19971026T030000
-RDATE:19971026T030000
-RDATE:19961027T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19970330T020000
-RDATE:19970330T020000
-RDATE:19960331T020000
-RDATE:19950326T020000
-RDATE:19940327T020000
-RDATE:19930328T020000
-RDATE:19920329T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19440801T000000
-RDATE:19440801T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410624T000000
-RDATE:19410624T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19400803T000000
-RDATE:19400803T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19200712T000000
-RDATE:19200712T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0136
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19191010T000000
-RDATE:19191010T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0124
-TZOFFSETTO:+0136
-TZNAME:KMT
-DTSTART:19170101T000000
-RDATE:19170101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0141
-TZOFFSETTO:+0124
-TZNAME:WMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Warsaw.ics b/libical/zoneinfo/Europe/Warsaw.ics
index 6750a3879f..2918675f98 100644
--- a/libical/zoneinfo/Europe/Warsaw.ics
+++ b/libical/zoneinfo/Europe/Warsaw.ics
@@ -2,156 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Warsaw
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Warsaw
 X-LIC-LOCATION:Europe/Warsaw
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19990328T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19991031T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19990101T000000
-RDATE:19990101T000000
-RDATE:19441004T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19981025T020000
-RDATE:19981025T020000
-RDATE:19971026T020000
-RDATE:19961027T020000
-RDATE:19950924T020000
-RDATE:19940925T020000
-RDATE:19930926T020000
-RDATE:19920927T020000
-RDATE:19910929T020000
-RDATE:19900930T020000
-RDATE:19890924T020000
-RDATE:19880925T020000
-RDATE:19870927T020000
-RDATE:19860928T020000
-RDATE:19850929T020000
-RDATE:19840930T020000
-RDATE:19830925T020000
-RDATE:19820926T020000
-RDATE:19810927T020000
-RDATE:19800928T020000
-RDATE:19790930T020000
-RDATE:19781001T020000
-RDATE:19770925T020000
-RDATE:19640927T020000
-RDATE:19630929T020000
-RDATE:19620930T020000
-RDATE:19611001T020000
-RDATE:19601002T020000
-RDATE:19591004T020000
-RDATE:19580928T020000
-RDATE:19570929T020000
-RDATE:19481003T000000
-RDATE:19471005T000000
-RDATE:19460907T000000
-RDATE:19451101T000000
-RDATE:19441001T000000
-RDATE:19431004T030000
-RDATE:19421102T030000
-RDATE:19220601T000000
-RDATE:19170917T030000
-RDATE:19161001T010000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19980329T010000
-RDATE:19980329T010000
-RDATE:19970330T010000
-RDATE:19960331T010000
-RDATE:19950326T010000
-RDATE:19940327T010000
-RDATE:19930328T010000
-RDATE:19920329T010000
-RDATE:19910331T010000
-RDATE:19900325T010000
-RDATE:19890326T010000
-RDATE:19880327T010000
-RDATE:19870329T010000
-RDATE:19860330T010000
-RDATE:19850331T010000
-RDATE:19840325T010000
-RDATE:19830327T010000
-RDATE:19820328T010000
-RDATE:19810329T010000
-RDATE:19800406T010000
-RDATE:19790401T010000
-RDATE:19780402T010000
-RDATE:19770403T010000
-RDATE:19640531T010000
-RDATE:19630526T010000
-RDATE:19620527T010000
-RDATE:19610528T010000
-RDATE:19600403T010000
-RDATE:19590531T010000
-RDATE:19580330T010000
-RDATE:19570602T010000
-RDATE:19480418T000000
-RDATE:19470504T000000
-RDATE:19460414T000000
-RDATE:19450429T000000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19400623T020000
-RDATE:19180415T020000
-RDATE:19170416T020000
-RDATE:19160430T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19190916T030000
-RDATE:19190916T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19190415T020000
-RDATE:19190415T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19180916T030000
-RDATE:19180916T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0124
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19150805T000000
-RDATE:19150805T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0124
-TZOFFSETTO:+0124
-TZNAME:WMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Zagreb.ics b/libical/zoneinfo/Europe/Zagreb.ics
index 6f1339cc57..3bf3ab4e4d 100644
--- a/libical/zoneinfo/Europe/Zagreb.ics
+++ b/libical/zoneinfo/Europe/Zagreb.ics
@@ -2,68 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Zagreb
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Zagreb
 X-LIC-LOCATION:Europe/Zagreb
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19830327T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19450916T030000
-RDATE:19441002T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19821127T000000
-RDATE:19821127T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19450508T020000
-RDATE:19450508T020000
-RDATE:19440403T020000
-RDATE:19430329T020000
-RDATE:19410418T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0122
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18840101T000000
-RDATE:18840101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Zaporozhye.ics b/libical/zoneinfo/Europe/Zaporozhye.ics
index f6ff0bdd8d..6f1a988f84 100644
--- a/libical/zoneinfo/Europe/Zaporozhye.ics
+++ b/libical/zoneinfo/Europe/Zaporozhye.ics
@@ -2,137 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Zaporozhye
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Zaporozhye
 X-LIC-LOCATION:Europe/Zaporozhye
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0300
 TZNAME:EEST
-DTSTART:19950326T030000
+DTSTART:19700329T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0300
 TZOFFSETTO:+0200
 TZNAME:EET
-DTSTART:19961027T040000
+DTSTART:19701025T040000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950924T040000
-RDATE:19950924T040000
-RDATE:19940925T000000
-RDATE:19930926T000000
-RDATE:19920927T000000
-RDATE:19910929T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19950101T000000
-RDATE:19950101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19940327T000000
-RDATE:19940327T000000
-RDATE:19930328T000000
-RDATE:19920329T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0300
-TZNAME:EEST
-DTSTART:19910331T020000
-RDATE:19910331T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19900930T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19831001T000000
-RDATE:19821001T000000
-RDATE:19811001T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:MSD
-DTSTART:19900325T020000
-RDATE:19900325T020000
-RDATE:19890326T020000
-RDATE:19880327T020000
-RDATE:19870329T020000
-RDATE:19860330T020000
-RDATE:19850331T020000
-RDATE:19840401T000000
-RDATE:19830401T000000
-RDATE:19820401T000000
-RDATE:19810401T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19431025T000000
-RDATE:19431025T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19431004T030000
-RDATE:19431004T030000
-RDATE:19421102T030000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19430329T020000
-RDATE:19430329T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0300
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19410825T000000
-RDATE:19410825T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0300
-TZNAME:MSK
-DTSTART:19300621T000000
-RDATE:19300621T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0220
-TZOFFSETTO:+0200
-TZNAME:EET
-DTSTART:19240502T000000
-RDATE:19240502T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0221
-TZOFFSETTO:+0220
-TZNAME:CUT
-DTSTART:18800101T000000
-RDATE:18800101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Europe/Zurich.ics b/libical/zoneinfo/Europe/Zurich.ics
index 8c1093f8e1..03ef7ac06c 100644
--- a/libical/zoneinfo/Europe/Zurich.ics
+++ b/libical/zoneinfo/Europe/Zurich.ics
@@ -2,75 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Europe/Zurich
+TZID:/softwarestudio.org/Olson_20011030_5/Europe/Zurich
 X-LIC-LOCATION:Europe/Zurich
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+0100
 TZOFFSETTO:+0200
 TZNAME:CEST
-DTSTART:19810329T020000
+DTSTART:19700329T020000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+0200
 TZOFFSETTO:+0100
 TZNAME:CET
-DTSTART:19961027T030000
+DTSTART:19701025T030000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0200
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19950924T030000
-RDATE:19950924T030000
-RDATE:19940925T030000
-RDATE:19930926T030000
-RDATE:19920927T030000
-RDATE:19910929T030000
-RDATE:19900930T030000
-RDATE:19890924T030000
-RDATE:19880925T030000
-RDATE:19870927T030000
-RDATE:19860928T030000
-RDATE:19850929T030000
-RDATE:19840930T030000
-RDATE:19830925T030000
-RDATE:19820926T030000
-RDATE:19810927T030000
-RDATE:19421004T000000
-RDATE:19411005T000000
-RDATE:19401231T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:19810101T000000
-RDATE:19810101T000000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+0100
-TZOFFSETTO:+0200
-TZNAME:CEST
-DTSTART:19420503T020000
-RDATE:19420503T020000
-RDATE:19410504T020000
-RDATE:19401102T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0030
-TZOFFSETTO:+0100
-TZNAME:CET
-DTSTART:18940601T000000
-RDATE:18940601T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0034
-TZOFFSETTO:+0030
-TZNAME:BMT
-DTSTART:18480912T000000
-RDATE:18480912T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Antananarivo.ics b/libical/zoneinfo/Indian/Antananarivo.ics
index c22aac9f12..f20014e2b5 100644
--- a/libical/zoneinfo/Indian/Antananarivo.ics
+++ b/libical/zoneinfo/Indian/Antananarivo.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Indian/Antananarivo
+TZID:/softwarestudio.org/Olson_20011030_5/Indian/Antananarivo
 X-LIC-LOCATION:Indian/Antananarivo
 BEGIN:STANDARD
-TZOFFSETFROM:+0400
-TZOFFSETTO:+0300
-TZNAME:EAT
-DTSTART:19540530T000000
-RDATE:19540530T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+0300
-TZOFFSETTO:+0400
-TZNAME:EAST
-DTSTART:19540227T230000
-RDATE:19540227T230000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+0310
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Chagos.ics b/libical/zoneinfo/Indian/Chagos.ics
index 0858ce79fa..ebfb962b4a 100644
--- a/libical/zoneinfo/Indian/Chagos.ics
+++ b/libical/zoneinfo/Indian/Chagos.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Chagos
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Chagos
 X-LIC-LOCATION:Indian/Chagos
 BEGIN:STANDARD
-TZOFFSETFROM:+0500
+TZOFFSETFROM:+0600
 TZOFFSETTO:+0600
 TZNAME:IOT
-DTSTART:19960101T000000
-RDATE:19960101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Christmas.ics b/libical/zoneinfo/Indian/Christmas.ics
index 01a6cf314d..863fe5d533 100644
--- a/libical/zoneinfo/Indian/Christmas.ics
+++ b/libical/zoneinfo/Indian/Christmas.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Christmas
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Christmas
 X-LIC-LOCATION:Indian/Christmas
 BEGIN:STANDARD
-TZOFFSETFROM:+0703
+TZOFFSETFROM:+0700
 TZOFFSETTO:+0700
 TZNAME:CXT
-DTSTART:18950201T000000
-RDATE:18950201T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Cocos.ics b/libical/zoneinfo/Indian/Cocos.ics
index 47ce80510a..53f8efafc8 100644
--- a/libical/zoneinfo/Indian/Cocos.ics
+++ b/libical/zoneinfo/Indian/Cocos.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Cocos
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Cocos
 X-LIC-LOCATION:Indian/Cocos
 BEGIN:STANDARD
 TZOFFSETFROM:+0630
 TZOFFSETTO:+0630
 TZNAME:CCT
-DTSTART:16010101T000000
-RDATE:16010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Comoro.ics b/libical/zoneinfo/Indian/Comoro.ics
index 66847d3a44..2be7d3d565 100644
--- a/libical/zoneinfo/Indian/Comoro.ics
+++ b/libical/zoneinfo/Indian/Comoro.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Comoro
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Comoro
 X-LIC-LOCATION:Indian/Comoro
 BEGIN:STANDARD
-TZOFFSETFROM:+0253
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Kerguelen.ics b/libical/zoneinfo/Indian/Kerguelen.ics
index e129df45cc..fbb01f3a47 100644
--- a/libical/zoneinfo/Indian/Kerguelen.ics
+++ b/libical/zoneinfo/Indian/Kerguelen.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Kerguelen
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Kerguelen
 X-LIC-LOCATION:Indian/Kerguelen
 BEGIN:STANDARD
-TZOFFSETFROM:+0000
+TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
 TZNAME:TFT
-DTSTART:19500101T000000
-RDATE:19500101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Mahe.ics b/libical/zoneinfo/Indian/Mahe.ics
index 572df29a14..76a18aad1a 100644
--- a/libical/zoneinfo/Indian/Mahe.ics
+++ b/libical/zoneinfo/Indian/Mahe.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Mahe
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Mahe
 X-LIC-LOCATION:Indian/Mahe
 BEGIN:STANDARD
-TZOFFSETFROM:+0342
+TZOFFSETFROM:+0400
 TZOFFSETTO:+0400
 TZNAME:SCT
-DTSTART:19060601T000000
-RDATE:19060601T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Maldives.ics b/libical/zoneinfo/Indian/Maldives.ics
index 4252389a9e..b48067e9f5 100644
--- a/libical/zoneinfo/Indian/Maldives.ics
+++ b/libical/zoneinfo/Indian/Maldives.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Indian/Maldives
+TZID:/softwarestudio.org/Olson_20011030_5/Indian/Maldives
 X-LIC-LOCATION:Indian/Maldives
 BEGIN:STANDARD
-TZOFFSETFROM:+0454
+TZOFFSETFROM:+0500
 TZOFFSETTO:+0500
 TZNAME:MVT
-DTSTART:19600101T000000
-RDATE:19600101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0454
-TZOFFSETTO:+0454
-TZNAME:MMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Mauritius.ics b/libical/zoneinfo/Indian/Mauritius.ics
index 18b6f924d0..2ba96ec781 100644
--- a/libical/zoneinfo/Indian/Mauritius.ics
+++ b/libical/zoneinfo/Indian/Mauritius.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Mauritius
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Mauritius
 X-LIC-LOCATION:Indian/Mauritius
 BEGIN:STANDARD
-TZOFFSETFROM:+0350
+TZOFFSETFROM:+0400
 TZOFFSETTO:+0400
 TZNAME:MUT
-DTSTART:19070101T000000
-RDATE:19070101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Mayotte.ics b/libical/zoneinfo/Indian/Mayotte.ics
index 2e9fc0f09d..92e4263db6 100644
--- a/libical/zoneinfo/Indian/Mayotte.ics
+++ b/libical/zoneinfo/Indian/Mayotte.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Mayotte
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Mayotte
 X-LIC-LOCATION:Indian/Mayotte
 BEGIN:STANDARD
-TZOFFSETFROM:+0301
+TZOFFSETFROM:+0300
 TZOFFSETTO:+0300
 TZNAME:EAT
-DTSTART:19110701T000000
-RDATE:19110701T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Indian/Reunion.ics b/libical/zoneinfo/Indian/Reunion.ics
index ab8479b9ea..0c345f2976 100644
--- a/libical/zoneinfo/Indian/Reunion.ics
+++ b/libical/zoneinfo/Indian/Reunion.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Indian/Reunion
+TZID:/softwarestudio.org/Olson_20011030_4/Indian/Reunion
 X-LIC-LOCATION:Indian/Reunion
 BEGIN:STANDARD
-TZOFFSETFROM:+0342
+TZOFFSETFROM:+0400
 TZOFFSETTO:+0400
 TZNAME:RET
-DTSTART:19110601T000000
-RDATE:19110601T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Apia.ics b/libical/zoneinfo/Pacific/Apia.ics
index 585733cfc8..96e1665718 100644
--- a/libical/zoneinfo/Pacific/Apia.ics
+++ b/libical/zoneinfo/Pacific/Apia.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Apia
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Apia
 X-LIC-LOCATION:Pacific/Apia
 BEGIN:STANDARD
-TZOFFSETFROM:-1130
+TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:WST
-DTSTART:19500101T000000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1127
-TZOFFSETTO:-1130
-TZNAME:SAMT
-DTSTART:19110101T000000
-RDATE:19110101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1233
-TZOFFSETTO:-1127
-TZNAME:LMT
-DTSTART:18790705T000000
-RDATE:18790705T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Auckland.ics b/libical/zoneinfo/Pacific/Auckland.ics
index bd7eb3e6fa..f3d46d3fb7 100644
--- a/libical/zoneinfo/Pacific/Auckland.ics
+++ b/libical/zoneinfo/Pacific/Auckland.ics
@@ -2,116 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Auckland
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Auckland
 X-LIC-LOCATION:Pacific/Auckland
 BEGIN:STANDARD
 TZOFFSETFROM:+1300
 TZOFFSETTO:+1200
 TZNAME:NZST
-DTSTART:19900318T030000
+DTSTART:19700315T030000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=3SU
 END:STANDARD
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
 TZOFFSETTO:+1300
 TZNAME:NZDT
-DTSTART:19901007T020000
+DTSTART:19701004T020000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:NZDT
-DTSTART:19891008T020000
-RDATE:19891008T020000
-RDATE:19881030T020000
-RDATE:19871025T020000
-RDATE:19861026T020000
-RDATE:19851027T020000
-RDATE:19841028T020000
-RDATE:19831030T020000
-RDATE:19821031T020000
-RDATE:19811025T020000
-RDATE:19801026T020000
-RDATE:19791028T020000
-RDATE:19781029T020000
-RDATE:19771030T020000
-RDATE:19761031T020000
-RDATE:19751026T020000
-RDATE:19741103T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19890305T030000
-RDATE:19890305T030000
-RDATE:19880306T030000
-RDATE:19870301T030000
-RDATE:19860302T030000
-RDATE:19850303T030000
-RDATE:19840304T030000
-RDATE:19830306T030000
-RDATE:19820307T030000
-RDATE:19810301T030000
-RDATE:19800302T030000
-RDATE:19790304T030000
-RDATE:19780305T030000
-RDATE:19770306T030000
-RDATE:19760307T030000
-RDATE:19750223T030000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1130
-TZOFFSETTO:+1200
-TZNAME:NZST
-DTSTART:19400929T020000
-RDATE:19400929T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1130
-TZNAME:NZST
-DTSTART:19400428T020000
-RDATE:19400428T020000
-RDATE:19390430T020000
-RDATE:19380424T020000
-RDATE:19370425T020000
-RDATE:19360426T020000
-RDATE:19350428T020000
-RDATE:19340429T020000
-RDATE:19330319T020000
-RDATE:19320320T020000
-RDATE:19310315T020000
-RDATE:19300316T020000
-RDATE:19290303T020000
-RDATE:19280304T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:+1130
-TZOFFSETTO:+1200
-TZNAME:NZHDT
-DTSTART:19390924T020000
-RDATE:19390924T020000
-RDATE:19380925T020000
-RDATE:19370926T020000
-RDATE:19360927T020000
-RDATE:19350929T020000
-RDATE:19340930T020000
-RDATE:19331008T020000
-RDATE:19321009T020000
-RDATE:19311011T020000
-RDATE:19301012T020000
-RDATE:19291030T020000
-RDATE:19281104T020000
-RDATE:19271126T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1139
-TZOFFSETTO:+1130
-TZNAME:NZST
-DTSTART:18680101T000000
-RDATE:18680101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Chatham.ics b/libical/zoneinfo/Pacific/Chatham.ics
index e4039080af..d0bd4dfc93 100644
--- a/libical/zoneinfo/Pacific/Chatham.ics
+++ b/libical/zoneinfo/Pacific/Chatham.ics
@@ -2,20 +2,20 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Chatham
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Chatham
 X-LIC-LOCATION:Pacific/Chatham
 BEGIN:DAYLIGHT
 TZOFFSETFROM:+1245
 TZOFFSETTO:+1345
 TZNAME:CHADT
-DTSTART:19901007T024500
+DTSTART:19701004T024500
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=1SU
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:+1345
 TZOFFSETTO:+1245
 TZNAME:CHAST
-DTSTART:19910317T034500
+DTSTART:19700315T034500
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=3SU
 END:STANDARD
 END:VTIMEZONE
diff --git a/libical/zoneinfo/Pacific/Easter.ics b/libical/zoneinfo/Pacific/Easter.ics
index 44f25a0df5..adb5ba640f 100644
--- a/libical/zoneinfo/Pacific/Easter.ics
+++ b/libical/zoneinfo/Pacific/Easter.ics
@@ -2,132 +2,21 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Easter
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Easter
 X-LIC-LOCATION:Pacific/Easter
 BEGIN:DAYLIGHT
 TZOFFSETFROM:-0600
 TZOFFSETTO:-0500
 TZNAME:EASST
-DTSTART:19991009T220000
+DTSTART:19701010T220000
 RRULE:FREQ=YEARLY;BYMONTH=10;BYDAY=2SA
 END:DAYLIGHT
 BEGIN:STANDARD
 TZOFFSETFROM:-0500
 TZOFFSETTO:-0600
 TZNAME:EAST
-DTSTART:20000311T220000
+DTSTART:19700314T220000
 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SA
 END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0500
-TZOFFSETTO:-0600
-TZNAME:EAST
-DTSTART:19990403T220000
-RDATE:19990403T220000
-RDATE:19980314T220000
-RDATE:19970308T220000
-RDATE:19960309T220000
-RDATE:19950311T220000
-RDATE:19940312T220000
-RDATE:19930313T220000
-RDATE:19920314T220000
-RDATE:19910309T220000
-RDATE:19900310T220000
-RDATE:19890311T220000
-RDATE:19880312T220000
-RDATE:19870314T220000
-RDATE:19860308T220000
-RDATE:19850309T220000
-RDATE:19840310T220000
-RDATE:19830312T220000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0500
-TZNAME:EASST
-DTSTART:19980926T220000
-RDATE:19980926T220000
-RDATE:19971011T220000
-RDATE:19961012T220000
-RDATE:19951014T220000
-RDATE:19941008T220000
-RDATE:19931009T220000
-RDATE:19921010T220000
-RDATE:19911012T220000
-RDATE:19901013T220000
-RDATE:19891014T220000
-RDATE:19881008T220000
-RDATE:19871010T220000
-RDATE:19861011T220000
-RDATE:19851012T220000
-RDATE:19841013T220000
-RDATE:19831008T220000
-RDATE:19821009T220000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:EAST
-DTSTART:19820314T000000
-RDATE:19820314T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0600
-TZOFFSETTO:-0700
-TZNAME:EAST
-DTSTART:19820313T210000
-RDATE:19820313T210000
-RDATE:19810314T210000
-RDATE:19800308T210000
-RDATE:19790310T210000
-RDATE:19780311T210000
-RDATE:19770312T210000
-RDATE:19760313T210000
-RDATE:19750308T210000
-RDATE:19740309T210000
-RDATE:19730310T210000
-RDATE:19720311T210000
-RDATE:19710313T210000
-RDATE:19700314T210000
-RDATE:19690308T210000
-RDATE:19680309T210000
-RDATE:19670311T210000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0700
-TZOFFSETTO:-0600
-TZNAME:EASST
-DTSTART:19811010T210000
-RDATE:19811010T210000
-RDATE:19801011T210000
-RDATE:19791013T210000
-RDATE:19781014T210000
-RDATE:19771008T210000
-RDATE:19761009T210000
-RDATE:19751011T210000
-RDATE:19741012T210000
-RDATE:19731013T210000
-RDATE:19721014T210000
-RDATE:19711009T210000
-RDATE:19701010T210000
-RDATE:19691011T210000
-RDATE:19681012T210000
-RDATE:19671014T210000
-RDATE:19661008T210000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-0717
-TZOFFSETTO:-0700
-TZNAME:EAST
-DTSTART:19320901T000000
-RDATE:19320901T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0717
-TZOFFSETTO:-0717
-TZNAME:MMT
-DTSTART:18900101T000000
-RDATE:18900101T000000
-END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Efate.ics b/libical/zoneinfo/Pacific/Efate.ics
index cf4d522786..947af3d591 100644
--- a/libical/zoneinfo/Pacific/Efate.ics
+++ b/libical/zoneinfo/Pacific/Efate.ics
@@ -2,46 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Efate
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Efate
 X-LIC-LOCATION:Pacific/Efate
 BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:VUT
-DTSTART:19930124T000000
-RDATE:19930124T000000
-RDATE:19920126T000000
-RDATE:19910324T000000
-RDATE:19900325T000000
-RDATE:19890326T000000
-RDATE:19880327T000000
-RDATE:19870329T000000
-RDATE:19860323T000000
-RDATE:19850324T000000
-RDATE:19840325T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:VUST
-DTSTART:19921025T000000
-RDATE:19921025T000000
-RDATE:19910929T000000
-RDATE:19900923T000000
-RDATE:19890924T000000
-RDATE:19880925T000000
-RDATE:19870927T000000
-RDATE:19860928T000000
-RDATE:19850929T000000
-RDATE:19841023T000000
-RDATE:19830925T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1113
 TZOFFSETTO:+1100
 TZNAME:VUT
-DTSTART:19120113T000000
-RDATE:19120113T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Enderbury.ics b/libical/zoneinfo/Pacific/Enderbury.ics
index eff4e77ce1..9eed2976dd 100644
--- a/libical/zoneinfo/Pacific/Enderbury.ics
+++ b/libical/zoneinfo/Pacific/Enderbury.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Enderbury
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Enderbury
 X-LIC-LOCATION:Pacific/Enderbury
 BEGIN:STANDARD
-TZOFFSETFROM:-1100
+TZOFFSETFROM:+1300
 TZOFFSETTO:+1300
 TZNAME:PHOT
-DTSTART:19950101T000000
-RDATE:19950101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1200
-TZOFFSETTO:-1100
-TZNAME:PHOT
-DTSTART:19791001T000000
-RDATE:19791001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1124
-TZOFFSETTO:-1200
-TZNAME:PHOT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Fakaofo.ics b/libical/zoneinfo/Pacific/Fakaofo.ics
index bb5445d15e..64a8119673 100644
--- a/libical/zoneinfo/Pacific/Fakaofo.ics
+++ b/libical/zoneinfo/Pacific/Fakaofo.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Fakaofo
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Fakaofo
 X-LIC-LOCATION:Pacific/Fakaofo
 BEGIN:STANDARD
-TZOFFSETFROM:-1125
+TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
 TZNAME:TKT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Fiji.ics b/libical/zoneinfo/Pacific/Fiji.ics
index 58cbb73ff6..da46b522ca 100644
--- a/libical/zoneinfo/Pacific/Fiji.ics
+++ b/libical/zoneinfo/Pacific/Fiji.ics
@@ -2,30 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Fiji
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Fiji
 X-LIC-LOCATION:Pacific/Fiji
 BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1200
-TZNAME:FJT
-DTSTART:20000227T030000
-RDATE:20000227T030000
-RDATE:19990228T030000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+1200
-TZOFFSETTO:+1300
-TZNAME:FJST
-DTSTART:19991107T020000
-RDATE:19991107T020000
-RDATE:19981101T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1154
 TZOFFSETTO:+1200
 TZNAME:FJT
-DTSTART:19151026T000000
-RDATE:19151026T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Funafuti.ics b/libical/zoneinfo/Pacific/Funafuti.ics
index ad01334553..6500c609e7 100644
--- a/libical/zoneinfo/Pacific/Funafuti.ics
+++ b/libical/zoneinfo/Pacific/Funafuti.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Funafuti
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Funafuti
 X-LIC-LOCATION:Pacific/Funafuti
 BEGIN:STANDARD
-TZOFFSETFROM:+1157
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:TVT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Galapagos.ics b/libical/zoneinfo/Pacific/Galapagos.ics
index 8f1fef6d86..3c488b1336 100644
--- a/libical/zoneinfo/Pacific/Galapagos.ics
+++ b/libical/zoneinfo/Pacific/Galapagos.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Galapagos
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Galapagos
 X-LIC-LOCATION:Pacific/Galapagos
 BEGIN:STANDARD
-TZOFFSETFROM:-0500
+TZOFFSETFROM:-0600
 TZOFFSETTO:-0600
 TZNAME:GALT
-DTSTART:19860101T000000
-RDATE:19860101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0558
-TZOFFSETTO:-0500
-TZNAME:ECT
-DTSTART:19310101T000000
-RDATE:19310101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Gambier.ics b/libical/zoneinfo/Pacific/Gambier.ics
index cf6edc58d8..77c96c30a0 100644
--- a/libical/zoneinfo/Pacific/Gambier.ics
+++ b/libical/zoneinfo/Pacific/Gambier.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Gambier
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Gambier
 X-LIC-LOCATION:Pacific/Gambier
 BEGIN:STANDARD
 TZOFFSETFROM:-0900
 TZOFFSETTO:-0900
 TZNAME:GAMT
-DTSTART:19121001T000000
-RDATE:19121001T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Guadalcanal.ics b/libical/zoneinfo/Pacific/Guadalcanal.ics
index 785515e0fe..23fafbe4b7 100644
--- a/libical/zoneinfo/Pacific/Guadalcanal.ics
+++ b/libical/zoneinfo/Pacific/Guadalcanal.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Guadalcanal
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Guadalcanal
 X-LIC-LOCATION:Pacific/Guadalcanal
 BEGIN:STANDARD
-TZOFFSETFROM:+1040
+TZOFFSETFROM:+1100
 TZOFFSETTO:+1100
 TZNAME:SBT
-DTSTART:19121001T000000
-RDATE:19121001T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Guam.ics b/libical/zoneinfo/Pacific/Guam.ics
index 2ac667614e..a37b6169bc 100644
--- a/libical/zoneinfo/Pacific/Guam.ics
+++ b/libical/zoneinfo/Pacific/Guam.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Guam
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Guam
 X-LIC-LOCATION:Pacific/Guam
 BEGIN:STANDARD
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:ChST
-DTSTART:20001223T000000
-RDATE:20001223T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0939
-TZOFFSETTO:+1000
-TZNAME:GST
-DTSTART:19010101T000000
-RDATE:19010101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1421
-TZOFFSETTO:+0939
-TZNAME:LMT
-DTSTART:18441231T000000
-RDATE:18441231T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Honolulu.ics b/libical/zoneinfo/Pacific/Honolulu.ics
index e255e5d87b..6b8f239520 100644
--- a/libical/zoneinfo/Pacific/Honolulu.ics
+++ b/libical/zoneinfo/Pacific/Honolulu.ics
@@ -2,50 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Honolulu
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Honolulu
 X-LIC-LOCATION:Pacific/Honolulu
 BEGIN:STANDARD
-TZOFFSETFROM:-1030
+TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
 TZNAME:HST
-DTSTART:19470608T020000
-RDATE:19470608T020000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0930
-TZOFFSETTO:-1030
-TZNAME:HST
-DTSTART:19450930T020000
-RDATE:19450930T020000
-RDATE:19330521T020000
-END:STANDARD
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-0930
-TZOFFSETTO:-0930
-TZNAME:HPT
-DTSTART:19450814T133000
-RDATE:19450814T133000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1030
-TZOFFSETTO:-0930
-TZNAME:HWT
-DTSTART:19420209T020000
-RDATE:19420209T020000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1030
-TZOFFSETTO:-0930
-TZNAME:HDT
-DTSTART:19330430T020000
-RDATE:19330430T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1031
-TZOFFSETTO:-1030
-TZNAME:HST
-DTSTART:19000101T120000
-RDATE:19000101T120000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Johnston.ics b/libical/zoneinfo/Pacific/Johnston.ics
index d0ec02b59f..cbbf3583d9 100644
--- a/libical/zoneinfo/Pacific/Johnston.ics
+++ b/libical/zoneinfo/Pacific/Johnston.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Johnston
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Johnston
 X-LIC-LOCATION:Pacific/Johnston
 BEGIN:STANDARD
 TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
 TZNAME:HST
-DTSTART:16010101T000000
-RDATE:16010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Kiritimati.ics b/libical/zoneinfo/Pacific/Kiritimati.ics
index f716e622e2..ec233b285a 100644
--- a/libical/zoneinfo/Pacific/Kiritimati.ics
+++ b/libical/zoneinfo/Pacific/Kiritimati.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Kiritimati
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Kiritimati
 X-LIC-LOCATION:Pacific/Kiritimati
 BEGIN:STANDARD
-TZOFFSETFROM:-1000
+TZOFFSETFROM:+1400
 TZOFFSETTO:+1400
 TZNAME:LINT
-DTSTART:19950101T000000
-RDATE:19950101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1040
-TZOFFSETTO:-1000
-TZNAME:LINT
-DTSTART:19791001T000000
-RDATE:19791001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1029
-TZOFFSETTO:-1040
-TZNAME:LINT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Kosrae.ics b/libical/zoneinfo/Pacific/Kosrae.ics
index b1438e299c..ccaa93ad72 100644
--- a/libical/zoneinfo/Pacific/Kosrae.ics
+++ b/libical/zoneinfo/Pacific/Kosrae.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Kosrae
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Kosrae
 X-LIC-LOCATION:Pacific/Kosrae
 BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:KOST
-DTSTART:19990101T000000
-RDATE:19990101T000000
-END:STANDARD
-BEGIN:STANDARD
 TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:KOST
-DTSTART:19691001T000000
-RDATE:19691001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1052
 TZOFFSETTO:+1100
 TZNAME:KOST
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Kwajalein.ics b/libical/zoneinfo/Pacific/Kwajalein.ics
index be0072be3d..7077a9fc3b 100644
--- a/libical/zoneinfo/Pacific/Kwajalein.ics
+++ b/libical/zoneinfo/Pacific/Kwajalein.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Kwajalein
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Kwajalein
 X-LIC-LOCATION:Pacific/Kwajalein
 BEGIN:STANDARD
-TZOFFSETFROM:-1200
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:MHT
-DTSTART:19930820T000000
-RDATE:19930820T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1100
-TZOFFSETTO:-1200
-TZNAME:KWAT
-DTSTART:19691001T000000
-RDATE:19691001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1109
-TZOFFSETTO:+1100
-TZNAME:MHT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Majuro.ics b/libical/zoneinfo/Pacific/Majuro.ics
index 7ed66baca9..52d0fbd7f6 100644
--- a/libical/zoneinfo/Pacific/Majuro.ics
+++ b/libical/zoneinfo/Pacific/Majuro.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Majuro
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Majuro
 X-LIC-LOCATION:Pacific/Majuro
 BEGIN:STANDARD
-TZOFFSETFROM:+1100
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:MHT
-DTSTART:19691001T000000
-RDATE:19691001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1125
-TZOFFSETTO:+1100
-TZNAME:MHT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Marquesas.ics b/libical/zoneinfo/Pacific/Marquesas.ics
index 21646fb51e..ab2ff6428c 100644
--- a/libical/zoneinfo/Pacific/Marquesas.ics
+++ b/libical/zoneinfo/Pacific/Marquesas.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Marquesas
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Marquesas
 X-LIC-LOCATION:Pacific/Marquesas
 BEGIN:STANDARD
-TZOFFSETFROM:-0918
+TZOFFSETFROM:-0930
 TZOFFSETTO:-0930
 TZNAME:MART
-DTSTART:19121001T000000
-RDATE:19121001T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Midway.ics b/libical/zoneinfo/Pacific/Midway.ics
index 2be4d908b8..20141707c3 100644
--- a/libical/zoneinfo/Pacific/Midway.ics
+++ b/libical/zoneinfo/Pacific/Midway.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Midway
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Midway
 X-LIC-LOCATION:Pacific/Midway
 BEGIN:STANDARD
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:SST
-DTSTART:19831130T000000
-RDATE:19831130T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19670401T000000
-RDATE:19670401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1149
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Nauru.ics b/libical/zoneinfo/Pacific/Nauru.ics
index c323ffc026..603ab7a892 100644
--- a/libical/zoneinfo/Pacific/Nauru.ics
+++ b/libical/zoneinfo/Pacific/Nauru.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Nauru
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Nauru
 X-LIC-LOCATION:Pacific/Nauru
 BEGIN:STANDARD
-TZOFFSETFROM:+1130
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:NRT
-DTSTART:19790501T000000
-RDATE:19790501T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1130
-TZNAME:NRT
-DTSTART:19440815T000000
-RDATE:19440815T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1130
-TZOFFSETTO:+0900
-TZNAME:JST
-DTSTART:19420315T000000
-RDATE:19420315T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1108
-TZOFFSETTO:+1130
-TZNAME:NRT
-DTSTART:19210115T000000
-RDATE:19210115T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Niue.ics b/libical/zoneinfo/Pacific/Niue.ics
index 8dcc236ca8..381f044fcc 100644
--- a/libical/zoneinfo/Pacific/Niue.ics
+++ b/libical/zoneinfo/Pacific/Niue.ics
@@ -2,28 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Niue
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Niue
 X-LIC-LOCATION:Pacific/Niue
 BEGIN:STANDARD
-TZOFFSETFROM:-1130
+TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:NUT
-DTSTART:19781001T000000
-RDATE:19781001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1120
-TZOFFSETTO:-1130
-TZNAME:NUT
-DTSTART:19510101T000000
-RDATE:19510101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1120
-TZOFFSETTO:-1120
-TZNAME:NUT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Norfolk.ics b/libical/zoneinfo/Pacific/Norfolk.ics
index 8f27bf4cdb..a9abeef437 100644
--- a/libical/zoneinfo/Pacific/Norfolk.ics
+++ b/libical/zoneinfo/Pacific/Norfolk.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Norfolk
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Norfolk
 X-LIC-LOCATION:Pacific/Norfolk
 BEGIN:STANDARD
-TZOFFSETFROM:+1112
+TZOFFSETFROM:+1130
 TZOFFSETTO:+1130
 TZNAME:NFT
-DTSTART:19510101T000000
-RDATE:19510101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1112
-TZOFFSETTO:+1112
-TZNAME:NMT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Noumea.ics b/libical/zoneinfo/Pacific/Noumea.ics
index a251e01fe7..f380bc9219 100644
--- a/libical/zoneinfo/Pacific/Noumea.ics
+++ b/libical/zoneinfo/Pacific/Noumea.ics
@@ -2,32 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Noumea
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Noumea
 X-LIC-LOCATION:Pacific/Noumea
 BEGIN:STANDARD
-TZOFFSETFROM:+1200
-TZOFFSETTO:+1100
-TZNAME:NCT
-DTSTART:19970302T030000
-RDATE:19970302T030000
-RDATE:19790227T000000
-RDATE:19780227T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+1100
-TZOFFSETTO:+1200
-TZNAME:NCST
-DTSTART:19961201T020000
-RDATE:19961201T020000
-RDATE:19781203T000000
-RDATE:19771204T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1106
 TZOFFSETTO:+1100
 TZNAME:NCT
-DTSTART:19120113T000000
-RDATE:19120113T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Pago_Pago.ics b/libical/zoneinfo/Pacific/Pago_Pago.ics
index b3489ef707..7cc8707f20 100644
--- a/libical/zoneinfo/Pacific/Pago_Pago.ics
+++ b/libical/zoneinfo/Pacific/Pago_Pago.ics
@@ -2,42 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Pago_Pago
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Pago_Pago
 X-LIC-LOCATION:Pacific/Pago_Pago
 BEGIN:STANDARD
 TZOFFSETFROM:-1100
 TZOFFSETTO:-1100
 TZNAME:SST
-DTSTART:19831130T000000
-RDATE:19831130T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1100
-TZOFFSETTO:-1100
-TZNAME:BST
-DTSTART:19670401T000000
-RDATE:19670401T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1130
-TZOFFSETTO:-1100
-TZNAME:NST
-DTSTART:19500101T000000
-RDATE:19500101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1123
-TZOFFSETTO:-1130
-TZNAME:SAMT
-DTSTART:19110101T000000
-RDATE:19110101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1237
-TZOFFSETTO:-1123
-TZNAME:LMT
-DTSTART:18790705T000000
-RDATE:18790705T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Palau.ics b/libical/zoneinfo/Pacific/Palau.ics
index f92ebe325f..77048c1267 100644
--- a/libical/zoneinfo/Pacific/Palau.ics
+++ b/libical/zoneinfo/Pacific/Palau.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Palau
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Palau
 X-LIC-LOCATION:Pacific/Palau
 BEGIN:STANDARD
-TZOFFSETFROM:+0858
+TZOFFSETFROM:+0900
 TZOFFSETTO:+0900
 TZNAME:PWT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Pitcairn.ics b/libical/zoneinfo/Pacific/Pitcairn.ics
index d207ed5af1..481efb8e7b 100644
--- a/libical/zoneinfo/Pacific/Pitcairn.ics
+++ b/libical/zoneinfo/Pacific/Pitcairn.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Pitcairn
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Pitcairn
 X-LIC-LOCATION:Pacific/Pitcairn
 BEGIN:STANDARD
-TZOFFSETFROM:-0830
+TZOFFSETFROM:-0800
 TZOFFSETTO:-0800
 TZNAME:PST
-DTSTART:19980427T000000
-RDATE:19980427T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-0840
-TZOFFSETTO:-0830
-TZNAME:PNT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Ponape.ics b/libical/zoneinfo/Pacific/Ponape.ics
index 71a1670ca6..4149e05141 100644
--- a/libical/zoneinfo/Pacific/Ponape.ics
+++ b/libical/zoneinfo/Pacific/Ponape.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Ponape
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Ponape
 X-LIC-LOCATION:Pacific/Ponape
 BEGIN:STANDARD
-TZOFFSETFROM:+1033
+TZOFFSETFROM:+1100
 TZOFFSETTO:+1100
 TZNAME:PONT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Port_Moresby.ics b/libical/zoneinfo/Pacific/Port_Moresby.ics
index 350e942b26..713ac92982 100644
--- a/libical/zoneinfo/Pacific/Port_Moresby.ics
+++ b/libical/zoneinfo/Pacific/Port_Moresby.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Port_Moresby
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Port_Moresby
 X-LIC-LOCATION:Pacific/Port_Moresby
 BEGIN:STANDARD
-TZOFFSETFROM:+0949
+TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:PGT
-DTSTART:18950101T000000
-RDATE:18950101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0949
-TZOFFSETTO:+0949
-TZNAME:PMMT
-DTSTART:18800101T000000
-RDATE:18800101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Rarotonga.ics b/libical/zoneinfo/Pacific/Rarotonga.ics
index a292fdf7e7..9e07723b55 100644
--- a/libical/zoneinfo/Pacific/Rarotonga.ics
+++ b/libical/zoneinfo/Pacific/Rarotonga.ics
@@ -2,58 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Rarotonga
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Rarotonga
 X-LIC-LOCATION:Pacific/Rarotonga
 BEGIN:STANDARD
-TZOFFSETFROM:-0930
-TZOFFSETTO:-1000
-TZNAME:CKT
-DTSTART:19910303T000000
-RDATE:19910303T000000
-RDATE:19900304T000000
-RDATE:19890305T000000
-RDATE:19880306T000000
-RDATE:19870301T000000
-RDATE:19860302T000000
-RDATE:19850303T000000
-RDATE:19840304T000000
-RDATE:19830306T000000
-RDATE:19820307T000000
-RDATE:19810301T000000
-RDATE:19800302T000000
-RDATE:19790304T000000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:-1000
-TZOFFSETTO:-0930
-TZNAME:CKHST
-DTSTART:19901028T000000
-RDATE:19901028T000000
-RDATE:19891029T000000
-RDATE:19881030T000000
-RDATE:19871025T000000
-RDATE:19861026T000000
-RDATE:19851027T000000
-RDATE:19841028T000000
-RDATE:19831030T000000
-RDATE:19821031T000000
-RDATE:19811025T000000
-RDATE:19801026T000000
-RDATE:19791028T000000
-END:DAYLIGHT
-BEGIN:DAYLIGHT
-TZOFFSETFROM:-1030
-TZOFFSETTO:-0930
-TZNAME:CKHST
-DTSTART:19781112T000000
-RDATE:19781112T000000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:-1039
-TZOFFSETTO:-1030
+TZOFFSETTO:-1000
 TZNAME:CKT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Saipan.ics b/libical/zoneinfo/Pacific/Saipan.ics
index 3a79ddde8c..101a987fa2 100644
--- a/libical/zoneinfo/Pacific/Saipan.ics
+++ b/libical/zoneinfo/Pacific/Saipan.ics
@@ -2,35 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Saipan
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Saipan
 X-LIC-LOCATION:Pacific/Saipan
 BEGIN:STANDARD
 TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:ChST
-DTSTART:20001223T000000
-RDATE:20001223T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0900
-TZOFFSETTO:+1000
-TZNAME:MPT
-DTSTART:19691001T000000
-RDATE:19691001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0943
-TZOFFSETTO:+0900
-TZNAME:MPT
-DTSTART:19010101T000000
-RDATE:19010101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:-1417
-TZOFFSETTO:+0943
-TZNAME:LMT
-DTSTART:18441231T000000
-RDATE:18441231T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Tahiti.ics b/libical/zoneinfo/Pacific/Tahiti.ics
index aebc7bb936..54c611dbe2 100644
--- a/libical/zoneinfo/Pacific/Tahiti.ics
+++ b/libical/zoneinfo/Pacific/Tahiti.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Tahiti
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Tahiti
 X-LIC-LOCATION:Pacific/Tahiti
 BEGIN:STANDARD
-TZOFFSETFROM:-0958
+TZOFFSETFROM:-1000
 TZOFFSETTO:-1000
 TZNAME:TAHT
-DTSTART:19121001T000000
-RDATE:19121001T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Tarawa.ics b/libical/zoneinfo/Pacific/Tarawa.ics
index edfe2237b9..11785b170c 100644
--- a/libical/zoneinfo/Pacific/Tarawa.ics
+++ b/libical/zoneinfo/Pacific/Tarawa.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Tarawa
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Tarawa
 X-LIC-LOCATION:Pacific/Tarawa
 BEGIN:STANDARD
-TZOFFSETFROM:+1132
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:GILT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Tongatapu.ics b/libical/zoneinfo/Pacific/Tongatapu.ics
index 4fd55f1429..c2c64946ad 100644
--- a/libical/zoneinfo/Pacific/Tongatapu.ics
+++ b/libical/zoneinfo/Pacific/Tongatapu.ics
@@ -2,46 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Tongatapu
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Tongatapu
 X-LIC-LOCATION:Pacific/Tongatapu
 BEGIN:STANDARD
-TZOFFSETFROM:+1400
-TZOFFSETTO:+1300
-TZNAME:TOT
-DTSTART:20020303T030000
-RDATE:20020303T030000
-RDATE:20010127T030000
-RDATE:20000319T030000
-END:STANDARD
-BEGIN:DAYLIGHT
 TZOFFSETFROM:+1300
-TZOFFSETTO:+1400
-TZNAME:TOST
-DTSTART:20011125T020000
-RDATE:20011125T020000
-RDATE:20001104T020000
-RDATE:19991007T020000
-END:DAYLIGHT
-BEGIN:STANDARD
-TZOFFSETFROM:+1300
-TZOFFSETTO:+1300
-TZNAME:TOT
-DTSTART:19990101T000000
-RDATE:19990101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1220
 TZOFFSETTO:+1300
 TZNAME:TOT
-DTSTART:19410101T000000
-RDATE:19410101T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+1219
-TZOFFSETTO:+1220
-TZNAME:TOT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Truk.ics b/libical/zoneinfo/Pacific/Truk.ics
index da6287e1ea..9b1fdcdf64 100644
--- a/libical/zoneinfo/Pacific/Truk.ics
+++ b/libical/zoneinfo/Pacific/Truk.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Truk
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Truk
 X-LIC-LOCATION:Pacific/Truk
 BEGIN:STANDARD
-TZOFFSETFROM:+1007
+TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:TRUT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Wake.ics b/libical/zoneinfo/Pacific/Wake.ics
index f42060f149..959ef58bb6 100644
--- a/libical/zoneinfo/Pacific/Wake.ics
+++ b/libical/zoneinfo/Pacific/Wake.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Wake
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Wake
 X-LIC-LOCATION:Pacific/Wake
 BEGIN:STANDARD
-TZOFFSETFROM:+1106
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:WAKT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Wallis.ics b/libical/zoneinfo/Pacific/Wallis.ics
index 29e7309802..62184865bb 100644
--- a/libical/zoneinfo/Pacific/Wallis.ics
+++ b/libical/zoneinfo/Pacific/Wallis.ics
@@ -2,14 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20010831_3/Pacific/Wallis
+TZID:/softwarestudio.org/Olson_20011030_4/Pacific/Wallis
 X-LIC-LOCATION:Pacific/Wallis
 BEGIN:STANDARD
-TZOFFSETFROM:+1215
+TZOFFSETFROM:+1200
 TZOFFSETTO:+1200
 TZNAME:WFT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
diff --git a/libical/zoneinfo/Pacific/Yap.ics b/libical/zoneinfo/Pacific/Yap.ics
index 9a943f6c30..b40286ac47 100644
--- a/libical/zoneinfo/Pacific/Yap.ics
+++ b/libical/zoneinfo/Pacific/Yap.ics
@@ -2,21 +2,13 @@ BEGIN:VCALENDAR
 PRODID:-//Ximian//NONSGML Evolution Olson-VTIMEZONE Converter//EN
 VERSION:2.0
 BEGIN:VTIMEZONE
-TZID:/softwarestudio.org/Olson_20011022_4/Pacific/Yap
+TZID:/softwarestudio.org/Olson_20011030_5/Pacific/Yap
 X-LIC-LOCATION:Pacific/Yap
 BEGIN:STANDARD
-TZOFFSETFROM:+0900
+TZOFFSETFROM:+1000
 TZOFFSETTO:+1000
 TZNAME:YAPT
-DTSTART:19691001T000000
-RDATE:19691001T000000
-END:STANDARD
-BEGIN:STANDARD
-TZOFFSETFROM:+0913
-TZOFFSETTO:+0900
-TZNAME:YAPT
-DTSTART:19010101T000000
-RDATE:19010101T000000
+DTSTART:19700101T000000
 END:STANDARD
 END:VTIMEZONE
 END:VCALENDAR
author	Damon Chaplin <damon@ximian.com>	2001-10-30 20:45:30 +0800
committer	Damon Chaplin <damon@src.gnome.org>	2001-10-30 20:45:30 +0800
commit	5f9a5038388148ab306c0418653c0018dfbedcd7 (patch)
tree	4eabed2ab36448ee00e6819800aaefd96a129c12 /libical
parent	dc918f67f310428b4f0ef3b098b1136e17f42668 (diff)
download	gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.tar.gz gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.tar.zst gsoc2013-evolution-5f9a5038388148ab306c0418653c0018dfbedcd7.zip