Public holidays
1640, Finland
| # | Date | Public holiday |
|---|---|---|
| 1 | Sunday, 1 January 1640 | New Year's Day |
| 2 | Friday, 6 January 1640 | Epiphany |
| 3 | Friday, 6 April 1640 | Good Friday |
| 4 | Sunday, 8 April 1640 | Easter Sunday |
| 5 | Monday, 9 April 1640 | Easter Monday |
| 6 | Tuesday, 1 May 1640 | May Day |
| 7 | Thursday, 17 May 1640 | Ascension Day |
| 8 | Sunday, 27 May 1640 | Whit Sunday |
| 9 | Saturday, 23 June 1640 | Midsummer Day |
| 10 | Saturday, 3 November 1640 | All Saints' Day |
| 11 | Thursday, 6 December 1640 | Independence Day |
| 12 | Tuesday, 25 December 1640 | Christmas Day |
| 13 | Wednesday, 26 December 1640 | St Stephen's Day |