1 | Saturday, 1 January 1820 |
New Year's Day |
| Monday, 3 January 1820 |
New Year's Day (observance) |
2 | Monday, 10 January 1820 |
Coming of Age Day |
3 | Friday, 11 February 1820 |
Foundation Day |
4 | Monday, 20 March 1820 |
Vernal Equinox Day |
5 | Saturday, 29 April 1820 |
Shōwa Day |
6 | Wednesday, 3 May 1820 |
Constitution Memorial Day |
7 | Thursday, 4 May 1820 |
Greenery Day |
8 | Friday, 5 May 1820 |
Children's Day |
9 | Monday, 17 July 1820 |
Marine Day |
10 | Monday, 18 September 1820 |
Respect-for-Aged Day |
11 | Saturday, 23 September 1820 |
Autumnal Equinox Day |
12 | Monday, 9 October 1820 |
Health and Sports Day |
13 | Friday, 3 November 1820 |
Culture Day |
14 | Thursday, 23 November 1820 |
Labor Thanksgiving Day |
15 | Saturday, 23 December 1820 |
Emperor's Birthday |