Public holidays
1640, USA, Wisconsin
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, January 1, 1640 | New Year's Day |
| Monday, January 2, 1640 | New Year's Day (observance) | |
| 2 | Monday, January 16, 1640 | Martin Luther King Day |
| 3 | Wednesday, February 15, 1640 | Susan B. Anthony Day |
| 4 | Monday, May 28, 1640 | Memorial Day |
| 5 | Tuesday, June 19, 1640 | Juneteenth National Independence Day |
| 6 | Wednesday, July 4, 1640 | Independence Day |
| 7 | Monday, September 3, 1640 | Labor Day |
| 8 | Monday, October 8, 1640 | Columbus Day |
| 9 | Tuesday, November 6, 1640 | Election Day |
| 10 | Thursday, November 22, 1640 | Thanksgiving |
| 11 | Monday, December 24, 1640 | Christmas Eve |
| 12 | Tuesday, December 25, 1640 | Christmas |
| 13 | Monday, December 31, 1640 | New Year's Eve |