Public holidays
2121, Japan, Standard
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 2121 | New Year's Day |
| 2 | Monday, 13 January 2121 | Coming of Age Day |
| 3 | Tuesday, 11 February 2121 | Foundation Day |
| 4 | Sunday, 23 February 2121 | Emperor's Birthday |
| Monday, 24 February 2121 | Emperor's Birthday (observance) | |
| 5 | Thursday, 20 March 2121 | Vernal Equinox Day |
| 6 | Tuesday, 29 April 2121 | Shōwa Day |
| 7 | Saturday, 3 May 2121 | Constitution Memorial Day |
| 8 | Sunday, 4 May 2121 | Greenery Day |
| 9 | Monday, 5 May 2121 | Children's Day |
| 10 | Monday, 21 July 2121 | Marine Day |
| 11 | Monday, 11 August 2121 | Mountain Day |
| 12 | Monday, 15 September 2121 | Respect-for-Aged Day |
| 13 | Tuesday, 23 September 2121 | Autumnal Equinox Day |
| 14 | Monday, 13 October 2121 | Health and Sports Day |
| 15 | Monday, 3 November 2121 | Culture Day |
| 16 | Sunday, 23 November 2121 | Labor Thanksgiving Day |