Japanese Eras
Showa, Heisei and Reiwa Year Tables
The tables you can scan instead of calculating, the anchors worth memorising, and how a new era name is actually chosen.
Japan Know How archive
Tag: reiwa
Japanese Eras
Japanese Era Years: Meiji to Reiwa, Explained
Japan runs two calendars at once. Five eras, one subtraction each, and the two details that turn a simple conversion into a wrong answer.