Public holidays
1800, Japan, Banks
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1800 | New Year's Day |
| 2 | Thursday, 2 January 1800 | January 2 |
| 3 | Friday, 3 January 1800 | January 3 |
| 4 | Monday, 13 January 1800 | Coming of Age Day |
| 5 | Tuesday, 11 February 1800 | Foundation Day |
| 6 | Thursday, 20 March 1800 | Vernal Equinox Day |
| 7 | Tuesday, 29 April 1800 | Shōwa Day |
| 8 | Saturday, 3 May 1800 | Constitution Memorial Day |
| 9 | Sunday, 4 May 1800 | Greenery Day |
| 10 | Monday, 5 May 1800 | Children's Day |
| 11 | Monday, 21 July 1800 | Marine Day |
| 12 | Monday, 15 September 1800 | Respect-for-Aged Day |
| 13 | Tuesday, 23 September 1800 | Autumnal Equinox Day |
| 14 | Monday, 13 October 1800 | Health and Sports Day |
| 15 | Monday, 3 November 1800 | Culture Day |
| 16 | Sunday, 23 November 1800 | Labor Thanksgiving Day |
| 17 | Tuesday, 23 December 1800 | Emperor's Birthday |
| 18 | Wednesday, 31 December 1800 | New Year's Eve |