Public holidays
1668, USA, Federal holidays
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, 1 January 1668 | New Year's Day |
| Monday, 2 January 1668 | New Year's Day (observance) | |
| 2 | Monday, 16 January 1668 | Martin Luther King Day |
| 3 | Monday, 20 February 1668 | Washington's Birthday |
| 4 | Monday, 28 May 1668 | Memorial Day |
| 5 | Wednesday, 4 July 1668 | Independence Day |
| 6 | Monday, 3 September 1668 | Labor Day |
| 7 | Monday, 8 October 1668 | Columbus Day |
| 8 | Sunday, 11 November 1668 | Veterans Day |
| Monday, 12 November 1668 | Veterans Day (observance) | |
| 9 | Thursday, 22 November 1668 | Thanksgiving |
| 10 | Tuesday, 25 December 1668 | Christmas |