Age ChartBorn in 1931 (Shōwa 6)
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School years in Japan
In Japan a school year starts on 1 April; children born from 2 April to 1 April of the next year are in the same grade.
| Born 1 Jan – 1 Apr 1931 | Born 2 Apr – 31 Dec 1931 | |
|---|---|---|
| Elementary school entry (April) | 1937 (Shōwa 12) | 1938 (Shōwa 13) |
| Elementary school graduation (March) | 1943 (Shōwa 18) | 1944 (Shōwa 19) |
| Junior high school entry | 1943 (Shōwa 18) | 1944 (Shōwa 19) |
| Junior high school graduation | 1946 (Shōwa 21) | 1947 (Shōwa 22) |
| High school entry | 1946 (Shōwa 21) | 1947 (Shōwa 22) |
| High school graduation | 1949 (Shōwa 24) | 1950 (Shōwa 25) |
| University entry | 1949 (Shōwa 24) | 1950 (Shōwa 25) |
| University graduation (4 years) | 1953 (Shōwa 28) | 1954 (Shōwa 29) |
Adulthood in Japan
| Celebration | Year |
|---|---|
| Turns 18 (legal age of adulthood in Japan since 1 April 2022) | 1949 (Shōwa 24) |
| Turns 20 | 1951 (Shōwa 26) |
Traditional longevity celebrations
Customs differ: celebrations are held either in the year of the full age or, traditionally, by the old count in which a person is 1 at birth.
| Celebration | Age | Year (full age) | Year (traditional count) |
|---|---|---|---|
| Kanreki | 60 | 1991 (Heisei 3) | 1990 (Heisei 2) |
| Koki | 70 | 2001 (Heisei 13) | 2000 (Heisei 12) |
| Kiju | 77 | 2008 (Heisei 20) | 2007 (Heisei 19) |
| Sanju | 80 | 2011 (Heisei 23) | 2010 (Heisei 22) |
| Beiju | 88 | 2019 (Heisei 31 / Reiwa 1) | 2018 (Heisei 30) |
| Sotsuju | 90 | 2021 (Reiwa 3) | 2020 (Reiwa 2) |
| Hakuju | 99 | 2030 | 2029 |
| Hyakuju | 100 | 2031 | 2030 |
Other years of the Goat
Method
Ages are computed from today’s date in Japan time. ‘Birthday passed’ means the birthday in the current year has already come. The traditional count adds one to the current year minus the birth year. Japanese era years follow the Era Name Act and the cabinet orders changing the era; in a year when the era changed, both names are shown. School years follow the School Education Act and the Act on Age Calculation (a person reaches an age on the day before the birthday, so those born on 1 April join the earlier grade). Adulthood follows Article 4 of the Civil Code.
About this page
People born in 1931 (Shōwa 6, year of the Goat) are 95 today if their birthday has passed this year, otherwise 94.