MD5 (cal.rb-1.11/cal.rb) = 6e11df4805b14ed434b88ebcb9278a8e
MD5 (cal.rb-1.11/Calendar.rb) = bbf344b4a119a616b9b708240da3ab27
MD5 (cal.rb-1.11/era_name) = 2c3c6a4de0d7d8a2101fbe7165509982