Public holidays
1645, USA, Oklahoma
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, January 1, 1645 | New Year's Day |
| Monday, January 2, 1645 | New Year's Day (observance) | |
| 2 | Monday, January 16, 1645 | Martin Luther King Day |
| 3 | Monday, February 20, 1645 | Washington's Birthday |
| 4 | Monday, May 29, 1645 | Memorial Day |
| 5 | Monday, June 19, 1645 | Juneteenth National Independence Day |
| 6 | Tuesday, July 4, 1645 | Independence Day |
| 7 | Monday, September 4, 1645 | Labor Day |
| Friday, November 10, 1645 | Veterans Day (observance) | |
| 8 | Saturday, November 11, 1645 | Veterans Day |
| 9 | Thursday, November 23, 1645 | Thanksgiving |
| 10 | Friday, November 24, 1645 | Black Friday |
| 11 | Sunday, December 24, 1645 | Christmas Eve |
| 12 | Monday, December 25, 1645 | Christmas |