Public holidays
1644, Finland
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1644 | New Year's Day |
| 2 | Wednesday, 6 January 1644 | Epiphany |
| 3 | Friday, 25 March 1644 | Good Friday |
| 4 | Sunday, 27 March 1644 | Easter Sunday |
| 5 | Monday, 28 March 1644 | Easter Monday |
| 6 | Sunday, 1 May 1644 | May Day |
| 7 | Thursday, 5 May 1644 | Ascension Day |
| 8 | Sunday, 15 May 1644 | Whit Sunday |
| 9 | Monday, 16 May 1644 | Whit Monday |
| 10 | Friday, 24 June 1644 | Midsummer Day |
| 11 | Sunday, 6 November 1644 | All Saints' Day |
| 12 | Tuesday, 6 December 1644 | Independence Day |
| 13 | Sunday, 25 December 1644 | Christmas Day |
| 14 | Monday, 26 December 1644 | St Stephen's Day |