Public holidays
1678, USA, District of Columbia
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1678 | New Year's Day |
| 2 | Tuesday, 22 February 1678 | Washington's Birthday/Mardi gras day |
| Friday, 15 April 1678 | Emancipation Day (observance) | |
| 3 | Saturday, 16 April 1678 | Emancipation Day |
| 4 | Monday, 30 May 1678 | Memorial Day |
| 5 | Monday, 4 July 1678 | Independence Day |
| 6 | Monday, 5 September 1678 | Labor Day |
| 7 | Sunday, 25 December 1678 | Christmas |
| Monday, 26 December 1678 | Christmas (observance) |