New Year's Day
January 2
New Year's Day (obs.)
January 2 (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
New Year's Eve
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 ‹ 1965
1966
1967 › 
# Date Public holiday
1Saturday, 1 January 1966 New Year's Day
2Sunday, 2 January 1966 January 2
Monday, 3 January 1966 New Year's Day (observance)
Tuesday, 4 January 1966 January 2 (observance)
3Monday, 10 January 1966 Coming of Age Day
4Friday, 11 February 1966 Foundation Day
5Sunday, 20 March 1966 Vernal Equinox Day
6Friday, 29 April 1966 Shōwa Day
7Tuesday, 3 May 1966 Constitution Memorial Day
8Wednesday, 4 May 1966 Greenery Day
9Thursday, 5 May 1966 Children's Day
10Monday, 18 July 1966 Marine Day
11Monday, 19 September 1966 Respect-for-Aged Day
12Friday, 23 September 1966 Autumnal Equinox Day
13Monday, 10 October 1966 Health and Sports Day
14Thursday, 3 November 1966 Culture Day
15Wednesday, 23 November 1966 Labor Thanksgiving Day
16Friday, 23 December 1966 Emperor's Birthday
17Saturday, 31 December 1966 New Year's Eve