New Year's Day
January 2
New Year's Day (obs.)
January 2 (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
New Year's Eve
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
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# Date Public holiday
1Saturday, 1 January 2231 New Year's Day
2Sunday, 2 January 2231 January 2
Monday, 3 January 2231 New Year's Day (observance)
Tuesday, 4 January 2231 January 2 (observance)
3Monday, 10 January 2231 Coming of Age Day
4Friday, 11 February 2231 Foundation Day
5Wednesday, 23 February 2231 Emperor's Birthday
6Sunday, 20 March 2231 Vernal Equinox Day
7Friday, 29 April 2231 Shōwa Day
8Tuesday, 3 May 2231 Constitution Memorial Day
9Wednesday, 4 May 2231 Greenery Day
10Thursday, 5 May 2231 Children's Day
11Monday, 18 July 2231 Marine Day
12Thursday, 11 August 2231 Mountain Day
13Monday, 19 September 2231 Respect-for-Aged Day
14Friday, 23 September 2231 Autumnal Equinox Day
15Monday, 10 October 2231 Health and Sports Day
16Thursday, 3 November 2231 Culture Day
17Wednesday, 23 November 2231 Labor Thanksgiving Day
18Saturday, 31 December 2231 New Year's Eve