Born in which year at legal age 21?

As of the as-of date, someone of legal age 21 was born in 2004 if before the birthday, or 2005 if after.

As-of date：30 August 2026

Legal age (man-nenrei)

21years

Birth year if before birthday

2004（甲申 / 平成16年）

Birth year if after birthday

2005（乙酉 / 平成17年）

Facts on this page

・People with legal age 21 as of 30 August 2026

・If before the birthday, born in 2004

・If after the birthday, born in 2005

・Eto before the birthday is 甲申

・Eto after the birthday is 乙酉

・Wareki year before the birthday is about 平成16年

・Wareki year after the birthday is about 平成17年