Public holidays
1511, USA, District of Columbia
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, January 1, 1511 | New Year's Day |
| Monday, January 2, 1511 | New Year's Day (observance) | |
| 2 | Wednesday, February 22, 1511 | Washington's Birthday |
| 3 | Sunday, April 16, 1511 | Emancipation Day |
| Monday, April 17, 1511 | Patriots' Day/Emancipation Day (observance) | |
| 4 | Tuesday, May 30, 1511 | Memorial Day |
| 5 | Tuesday, July 4, 1511 | Independence Day |
| 6 | Monday, September 4, 1511 | Labor Day |
| 7 | Monday, December 25, 1511 | Christmas |