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
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 ‹ 1979
1980
1981 › 
# Date Public holiday
1Tuesday, 1 January 1980 New Year's Day
2Wednesday, 2 January 1980 January 2
3Thursday, 3 January 1980 January 3
4Monday, 14 January 1980 Coming of Age Day
5Monday, 11 February 1980 Foundation Day
6Thursday, 20 March 1980 Vernal Equinox Day
7Tuesday, 29 April 1980 Shōwa Day
8Saturday, 3 May 1980 Constitution Memorial Day
9Sunday, 4 May 1980 Greenery Day
10Monday, 5 May 1980 Children's Day
11Monday, 21 July 1980 Marine Day
12Monday, 15 September 1980 Respect-for-Aged Day
13Tuesday, 23 September 1980 Autumnal Equinox Day
14Monday, 13 October 1980 Health and Sports Day
15Monday, 3 November 1980 Culture Day
16Sunday, 23 November 1980 Labor Thanksgiving Day
17Tuesday, 23 December 1980 Emperor's Birthday
18Wednesday, 31 December 1980 New Year's Eve