Public holidays
1231, USA, Wisconsin
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1231 | New Year's Day |
| 2 | Monday, 20 January 1231 | Martin Luther King Day |
| Friday, 14 February 1231 | Susan B. Anthony Day (observance) | |
| 3 | Saturday, 15 February 1231 | Susan B. Anthony Day |
| 4 | Monday, 26 May 1231 | Memorial Day |
| 5 | Thursday, 19 June 1231 | Juneteenth National Independence Day |
| 6 | Friday, 4 July 1231 | Independence Day |
| 7 | Monday, 1 September 1231 | Labor Day |
| 8 | Monday, 13 October 1231 | Columbus Day |
| 9 | Tuesday, 4 November 1231 | Election Day |
| 10 | Thursday, 27 November 1231 | Thanksgiving |
| 11 | Wednesday, 24 December 1231 | Christmas Eve |
| 12 | Thursday, 25 December 1231 | Christmas |
| 13 | Wednesday, 31 December 1231 | New Year's Eve |