Public holidays
1857, USA, Colorado
| # | Date | Public holiday |
|---|---|---|
| 1 | Thursday, January 1, 1857 | New Year's Day |
| 2 | Sunday, February 22, 1857 | Washington's Birthday |
| 3 | Tuesday, March 31, 1857 | César Chávez Day |
| 4 | Saturday, May 30, 1857 | Memorial Day |
| Friday, July 3, 1857 | Independence Day (observance) | |
| 5 | Saturday, July 4, 1857 | Independence Day |
| 6 | Monday, September 7, 1857 | Labor Day |
| 7 | Friday, December 25, 1857 | Christmas |