Public holidays
1805, USA, Colorado
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, 1 January 1805 | New Year's Day |
| 2 | Friday, 22 February 1805 | Washington's Birthday |
| 3 | Sunday, 31 March 1805 | César Chávez Day |
| Monday, 1 April 1805 | César Chávez Day (observance) | |
| 4 | Thursday, 30 May 1805 | Memorial Day |
| 5 | Thursday, 4 July 1805 | Independence Day |
| 6 | Monday, 2 September 1805 | Labor Day |
| 7 | Wednesday, 25 December 1805 | Christmas |