Age ChartBorn in 1958 (Shōwa 33)
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 1958 | Born 2 Apr – 31 Dec 1958 | |
|---|---|---|
| Elementary school entry (April) | 1964 (Shōwa 39) | 1965 (Shōwa 40) |
| Elementary school graduation (March) | 1970 (Shōwa 45) | 1971 (Shōwa 46) |
| Junior high school entry | 1970 (Shōwa 45) | 1971 (Shōwa 46) |
| Junior high school graduation | 1973 (Shōwa 48) | 1974 (Shōwa 49) |
| High school entry | 1973 (Shōwa 48) | 1974 (Shōwa 49) |
| High school graduation | 1976 (Shōwa 51) | 1977 (Shōwa 52) |
| University entry | 1976 (Shōwa 51) | 1977 (Shōwa 52) |
| University graduation (4 years) | 1980 (Shōwa 55) | 1981 (Shōwa 56) |
Adulthood in Japan
| Celebration | Year |
|---|---|
| Turns 18 (legal age of adulthood in Japan since 1 April 2022) | 1976 (Shōwa 51) |
| Turns 20 | 1978 (Shōwa 53) |
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 | 2018 (Heisei 30) | 2017 (Heisei 29) |
| Koki | 70 | 2028 | 2027 |
| Kiju | 77 | 2035 | 2034 |
| Sanju | 80 | 2038 | 2037 |
| Beiju | 88 | 2046 | 2045 |
| Sotsuju | 90 | 2048 | 2047 |
| Hakuju | 99 | 2057 | 2056 |
| Hyakuju | 100 | 2058 | 2057 |
Other years of the Dog
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 1958 (Shōwa 33, year of the Dog) are 68 today if their birthday has passed this year, otherwise 67.