Public holidays
1666, Suisse, Tessin
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1666 | New Year's Day |
| 2 | Wednesday, 6 January 1666 | Epiphany |
| 3 | Friday, 19 March 1666 | Saint Joseph's Day |
| 4 | Monday, 19 April 1666 | Easter Monday |
| 5 | Saturday, 1 May 1666 | Labour Day |
| 6 | Thursday, 27 May 1666 | Ascension Day |
| 7 | Monday, 7 June 1666 | Whit Monday |
| 8 | Thursday, 17 June 1666 | Corpus Christi |
| 9 | Tuesday, 29 June 1666 | Saints Peter and Paul |
| 10 | Sunday, 1 August 1666 | Swiss National Day |
| 11 | Sunday, 15 August 1666 | Assumption of Mary |
| 12 | Monday, 1 November 1666 | All Saints' Day |
| 13 | Wednesday, 8 December 1666 | Immaculate Conception |
| 14 | Saturday, 25 December 1666 | Christmas Day |
| 15 | Sunday, 26 December 1666 | Saint Stephen's Day |