|>>|| No. 15730
>The Japanese calendar counts up from the coronation of a new emperor, using not the name of the emperor, but the name of the era they herald. Akihito’s coronation in January 1989 marked the beginning of the Heisei era, and the end of the Shōwa era that preceded him; and Naruhito’s coronation will itself mark another new era.
>But that brings problems. For one, Akihito has been on the throne for almost the entirety of the information age, meaning that many systems have never had to deal with a switchover in era. For another, the official name of Naruhito’s era has yet to be announced, causing concern for diary publishers, calendar printers and international standards bodies.
>It’s why some are calling it “Japan’s Y2K problem”.