New Year's Day
January 2
January 3
Coming of Age Day
Foundation Day
Vernal Equinox Day
Shōwa Day
Constitution Memorial Day
Greenery Day
Children's Day
Marine Day
Respect-for-Aged Day
Autumnal Equinox Day
Health and Sports Day
Culture Day
Labor Thanksgiving Day
Emperor's Birthday
New Year's Eve
  January
  February
  March
  April
  May
  June
  July
  August
  September
  October
  November
  December
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1665
1666 › 
# Date Public holiday
1Thursday, 1 January 1665 New Year's Day
2Friday, 2 January 1665 January 2
3Saturday, 3 January 1665 January 3
4Monday, 12 January 1665 Coming of Age Day
5Wednesday, 11 February 1665 Foundation Day
6Friday, 20 March 1665 Vernal Equinox Day
7Wednesday, 29 April 1665 Shōwa Day
8Sunday, 3 May 1665 Constitution Memorial Day
9Monday, 4 May 1665 Greenery Day
10Tuesday, 5 May 1665 Children's Day
11Monday, 20 July 1665 Marine Day
12Monday, 21 September 1665 Respect-for-Aged Day
13Wednesday, 23 September 1665 Autumnal Equinox Day
14Monday, 12 October 1665 Health and Sports Day
15Tuesday, 3 November 1665 Culture Day
16Monday, 23 November 1665 Labor Thanksgiving Day
17Wednesday, 23 December 1665 Emperor's Birthday
18Thursday, 31 December 1665 New Year's Eve