Public holidays
1780, USA, South Carolina
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, January 1, 1780 | New Year's Day |
| 2 | Tuesday, February 22, 1780 | Washington's Birthday |
| 3 | Wednesday, May 10, 1780 | Confederate Memorial Day |
| 4 | Tuesday, May 30, 1780 | Memorial Day |
| 5 | Tuesday, July 4, 1780 | Independence Day |
| 6 | Monday, September 4, 1780 | Labor Day |
| 7 | Monday, December 25, 1780 | Christmas |