Public holidays
1644, Suisse, Aargau (Aarau, Brugg, Kulm, Lenzburg, Zofingen Baden)
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1644 | New Year's Day |
| 2 | Saturday, 2 January 1644 | Berchtold's Day |
| 3 | Friday, 25 March 1644 | Good Friday |
| 4 | Monday, 28 March 1644 | Easter Monday |
| 5 | Thursday, 5 May 1644 | Ascension Day |
| 6 | Monday, 16 May 1644 | Whit Monday |
| 7 | Monday, 1 August 1644 | Swiss National Day |
| 8 | Sunday, 25 December 1644 | Christmas Day |
| 9 | Monday, 26 December 1644 | Saint Stephen's Day |