New Year's Day
New Year's Day (obs.)
Coming of Age Day
Foundation Day
Emperor's Birthday
Vernal Equinox Day
Shōwa Day
Constitution Memorial Day
Greenery Day
Children's Day
Marine Day
Mountain Day
Respect-for-Aged Day
Autumnal Equinox Day
Health and Sports Day
Culture Day
Labor Thanksgiving Day
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
 ‹ 2230
2231
2232 › 
# Date Public holiday
1Saturday, 1 January 2231 New Year's Day
Monday, 3 January 2231 New Year's Day (observance)
2Monday, 10 January 2231 Coming of Age Day
3Friday, 11 February 2231 Foundation Day
4Wednesday, 23 February 2231 Emperor's Birthday
5Sunday, 20 March 2231 Vernal Equinox Day
6Friday, 29 April 2231 Shōwa Day
7Tuesday, 3 May 2231 Constitution Memorial Day
8Wednesday, 4 May 2231 Greenery Day
9Thursday, 5 May 2231 Children's Day
10Monday, 18 July 2231 Marine Day
11Thursday, 11 August 2231 Mountain Day
12Monday, 19 September 2231 Respect-for-Aged Day
13Friday, 23 September 2231 Autumnal Equinox Day
14Monday, 10 October 2231 Health and Sports Day
15Thursday, 3 November 2231 Culture Day
16Wednesday, 23 November 2231 Labor Thanksgiving Day