Public holidays
1663, USA, Colorado
| # | Date | Public holiday |
|---|---|---|
| 1 | Monday, January 1, 1663 | New Year's Day |
| 2 | Thursday, February 22, 1663 | Washington's Birthday |
| Friday, March 30, 1663 | César Chávez Day (observance) | |
| 3 | Saturday, March 31, 1663 | César Chávez Day |
| 4 | Wednesday, May 30, 1663 | Memorial Day |
| 5 | Wednesday, July 4, 1663 | Independence Day |
| 6 | Monday, September 3, 1663 | Labor Day |
| 7 | Tuesday, December 25, 1663 | Christmas |