Age ChartBorn in 1945 (Shōwa 20)
Last updated:
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 1945 | Born 2 Apr – 31 Dec 1945 | |
|---|---|---|
| Elementary school entry (April) | 1951 (Shōwa 26) | 1952 (Shōwa 27) |
| Elementary school graduation (March) | 1957 (Shōwa 32) | 1958 (Shōwa 33) |
| Junior high school entry | 1957 (Shōwa 32) | 1958 (Shōwa 33) |
| Junior high school graduation | 1960 (Shōwa 35) | 1961 (Shōwa 36) |
| High school entry | 1960 (Shōwa 35) | 1961 (Shōwa 36) |
| High school graduation | 1963 (Shōwa 38) | 1964 (Shōwa 39) |
| University entry | 1963 (Shōwa 38) | 1964 (Shōwa 39) |
| University graduation (4 years) | 1967 (Shōwa 42) | 1968 (Shōwa 43) |
Adulthood in Japan
| Celebration | Year |
|---|---|
| Turns 18 (legal age of adulthood in Japan since 1 April 2022) | 1963 (Shōwa 38) |
| Turns 20 | 1965 (Shōwa 40) |
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 | 2005 (Heisei 17) | 2004 (Heisei 16) |
| Koki | 70 | 2015 (Heisei 27) | 2014 (Heisei 26) |
| Kiju | 77 | 2022 (Reiwa 4) | 2021 (Reiwa 3) |
| Sanju | 80 | 2025 (Reiwa 7) | 2024 (Reiwa 6) |
| Beiju | 88 | 2033 | 2032 |
| Sotsuju | 90 | 2035 | 2034 |
| Hakuju | 99 | 2044 | 2043 |
| Hyakuju | 100 | 2045 | 2044 |
Other years of the Rooster
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 1945 (Shōwa 20, year of the Rooster) are 81 today if their birthday has passed this year, otherwise 80.