Public holidays
1668, USA, Iowa
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, 1 January 1668 | New Year's Day |
| Monday, 2 January 1668 | New Year's Day (observance) | |
| 2 | Sunday, 12 February 1668 | Lincoln's Birthday |
| Monday, 13 February 1668 | Lincoln's Birthday (observance) | |
| 3 | Wednesday, 30 May 1668 | Memorial Day |
| 4 | Wednesday, 4 July 1668 | Independence Day |
| 5 | Monday, 3 September 1668 | Labor Day |
| 6 | Tuesday, 25 December 1668 | Christmas |