japanese/p5-DateTime-Calendar-Japanese-Era/pkg-descr


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Japan traditionally used an "era" system since 645. In modern days
(since the Meiji era) eras can only be renewed when a new emperor
succeeds his predecessor. Until then new eras were proclaimed for
various reasons, including the succession of the shogunate during the
Tokugawa shogunate.

WWW: https://metacpan.org/release/DateTime-Calendar-Japanese-Era