Public holidays
1644, Netherlands, Public sector
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1644 | New Year's Day |
| 2 | Friday, 25 March 1644 | Good Friday |
| 3 | Sunday, 27 March 1644 | Easter Sunday |
| 4 | Monday, 28 March 1644 | Easter Monday |
| 5 | Thursday, 5 May 1644 | Ascension Day |
| 6 | Sunday, 15 May 1644 | Pentecost Sunday |
| 7 | Monday, 16 May 1644 | Pentecost Monday |
| 8 | Sunday, 25 December 1644 | Christmas Day |
| 9 | Monday, 26 December 1644 | Boxing Day |