New Year's Day
New Year's Day (obs.)
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
  January
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  September
  October
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 ‹ 1965
1966
1967 › 
# Date Public holiday
1Saturday, 1 January 1966 New Year's Day
Monday, 3 January 1966 New Year's Day (observance)
2Monday, 10 January 1966 Coming of Age Day
3Friday, 11 February 1966 Foundation Day
4Sunday, 20 March 1966 Vernal Equinox Day
5Friday, 29 April 1966 Shōwa Day
6Tuesday, 3 May 1966 Constitution Memorial Day
7Wednesday, 4 May 1966 Greenery Day
8Thursday, 5 May 1966 Children's Day
9Monday, 18 July 1966 Marine Day
10Monday, 19 September 1966 Respect-for-Aged Day
11Friday, 23 September 1966 Autumnal Equinox Day
12Monday, 10 October 1966 Health and Sports Day
13Thursday, 3 November 1966 Culture Day
14Wednesday, 23 November 1966 Labor Thanksgiving Day
15Friday, 23 December 1966 Emperor's Birthday