Public holidays
1667, USA, Colorado
| # | Date | Public holiday |
|---|---|---|
| 1 | Saturday, 1 January 1667 | New Year's Day |
| 2 | Tuesday, 22 February 1667 | Washington's Birthday/Mardi gras day |
| 3 | Thursday, 31 March 1667 | César Chávez Day |
| 4 | Monday, 30 May 1667 | Memorial Day |
| 5 | Monday, 4 July 1667 | Independence Day |
| 6 | Monday, 5 September 1667 | Labor Day |
| 7 | Sunday, 25 December 1667 | Christmas |
| Monday, 26 December 1667 | Christmas (observance) |