1 | Sunday, 1 January 2204 |
New Year's Day |
| Monday, 2 January 2204 |
New Year's Day (observance) |
| Tuesday, 3 January 2204 |
January 2 (observance) |
2 | Monday, 9 January 2204 |
Coming of Age Day |
3 | Saturday, 11 February 2204 |
Foundation Day |
4 | Thursday, 23 February 2204 |
Emperor's Birthday |
5 | Tuesday, 20 March 2204 |
Vernal Equinox Day |
6 | Sunday, 29 April 2204 |
Shōwa Day |
| Monday, 30 April 2204 |
Shōwa Day (observance) |
7 | Thursday, 3 May 2204 |
Constitution Memorial Day |
8 | Friday, 4 May 2204 |
Greenery Day |
9 | Saturday, 5 May 2204 |
Children's Day |
10 | Monday, 16 July 2204 |
Marine Day |
11 | Saturday, 11 August 2204 |
Mountain Day |
12 | Monday, 17 September 2204 |
Respect-for-Aged Day |
13 | Sunday, 23 September 2204 |
Autumnal Equinox Day |
| Monday, 24 September 2204 |
Autumnal Equinox Day (observance) |
14 | Monday, 8 October 2204 |
Health and Sports Day |
15 | Saturday, 3 November 2204 |
Culture Day |
16 | Friday, 23 November 2204 |
Labor Thanksgiving Day |
17 | Monday, 31 December 2204 |
New Year's Eve |