Public holidays
1778, Japan, Standard
| # | Date | Public holiday |
|---|---|---|
| 1 | Thursday, 1 January 1778 | New Year's Day |
| 2 | Monday, 12 January 1778 | Coming of Age Day |
| 3 | Wednesday, 11 February 1778 | Foundation Day |
| 4 | Friday, 20 March 1778 | Vernal Equinox Day |
| 5 | Wednesday, 29 April 1778 | Shōwa Day |
| 6 | Sunday, 3 May 1778 | Constitution Memorial Day |
| 7 | Monday, 4 May 1778 | Greenery Day |
| 8 | Tuesday, 5 May 1778 | Children's Day |
| 9 | Monday, 20 July 1778 | Marine Day |
| 10 | Monday, 21 September 1778 | Respect-for-Aged Day |
| 11 | Wednesday, 23 September 1778 | Autumnal Equinox Day |
| 12 | Monday, 12 October 1778 | Health and Sports Day |
| 13 | Tuesday, 3 November 1778 | Culture Day |
| 14 | Monday, 23 November 1778 | Labor Thanksgiving Day |
| 15 | Wednesday, 23 December 1778 | Emperor's Birthday |