Public holidays
1666, Sweden
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1666 | New Year's Day |
| 2 | Wednesday, 6 January 1666 | Epiphany |
| 3 | Friday, 16 April 1666 | Good Friday |
| 4 | Sunday, 18 April 1666 | Easter Sunday |
| 5 | Monday, 19 April 1666 | Easter Monday |
| 6 | Saturday, 1 May 1666 | Labour Day |
| 7 | Thursday, 27 May 1666 | Ascension Day |
| 8 | Sunday, 6 June 1666 | Whit Sunday |
| 9 | Friday, 25 June 1666 | Midsummer Eve |
| 10 | Saturday, 26 June 1666 | Midsummer's Day |
| 11 | Saturday, 6 November 1666 | All Saints' Day |
| 12 | Friday, 24 December 1666 | Christmas Eve |
| 13 | Saturday, 25 December 1666 | Christmas Day |
| 14 | Sunday, 26 December 1666 | Boxing Day |
| 15 | Friday, 31 December 1666 | New Year's Eve |