2031 in the Japanese calendar: Reiwa 13
令和13年
Reiwa 13 · written R13 on forms
Reiwaera13year of the era
How to read it
2031 minus 2019, the year Reiwa began, plus one, gives 13: 令和13年. The shortcut Japanese people use: add 18 to a Reiwa year and you have the last two digits of the Western year — 13 + 18 = 31. On paper it is R13: forms print the era options — 明・大・昭・平・令, or the letters M T S H R — beside the date box, and you circle one and write the number. This is a projection. An era lasts as long as the emperor reigns, so a year after 2026 carries its Reiwa number only provisionally; a new era would restart the count at gannen from the day it began.
2031 in the Chinese zodiac
2031 is the year of the Metal Boar (辛亥). The zodiac year began on 23 January 2031.
Other years
Every year of the Reiwa era → · How the Japanese calendar works, and every year 1868–2050
