Public holidays
1780, USA, Alaska
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, January 1, 1780 | New Year's Day |
| 2 | Tuesday, February 22, 1780 | Washington's Birthday |
| Monday, March 27, 1780 | Seward's Day/Prince Jonah Kuhio Kalanianaole Day (observance) | |
| 3 | Tuesday, May 30, 1780 | Memorial Day |
| 4 | Tuesday, July 4, 1780 | Independence Day |
| 5 | Monday, September 4, 1780 | Labor Day |
| 6 | Wednesday, October 18, 1780 | Alaska Day |
| 7 | Monday, December 25, 1780 | Christmas |