Public holidays
1664, Suisse, Aargau
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, 1 January 1664 | New Year's Day |
| 2 | Wednesday, 2 January 1664 | Berchtold's Day |
| 3 | Friday, 11 April 1664 | Good Friday |
| 4 | Monday, 14 April 1664 | Easter Monday |
| 5 | Thursday, 22 May 1664 | Ascension Day |
| 6 | Monday, 2 June 1664 | Whit Monday |
| 7 | Thursday, 12 June 1664 | Corpus Christi |
| 8 | Friday, 1 August 1664 | Swiss National Day |
| 9 | Friday, 15 August 1664 | Assumption of Mary |
| 10 | Saturday, 1 November 1664 | All Saints' Day |
| 11 | Monday, 8 December 1664 | Immaculate Conception |
| 12 | Thursday, 25 December 1664 | Christmas Day |
| 13 | Friday, 26 December 1664 | Saint Stephen's Day |