Public holidays
1645, Russia
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, 1 January 1645 | New Year Holiday |
| 2 | Monday, 2 January 1645 | New Year Holiday |
| 3 | Tuesday, 3 January 1645 | New Year Holiday |
| 4 | Wednesday, 4 January 1645 | New Year Holiday |
| 5 | Thursday, 5 January 1645 | New Year Holiday |
| 6 | Friday, 6 January 1645 | New Year Holiday |
| 7 | Saturday, 7 January 1645 | New Year Holiday |
| 8 | Sunday, 8 January 1645 | New Year Holiday |
| 9 | Thursday, 23 February 1645 | Defender of the Fatherland Day |
| 10 | Wednesday, 8 March 1645 | Women's Day |
| 11 | Wednesday, 19 April 1645 | Orthodox Easter |
| 12 | Monday, 1 May 1645 | Spring and Labour Day |
| 13 | Tuesday, 9 May 1645 | Victory Day |
| 14 | Monday, 12 June 1645 | Russia Day |
| 15 | Saturday, 4 November 1645 | Unity Day |
| 16 | Monday, 6 November 1645 | Unity Day |