Public holidays
1644, Brasil, São Paulo
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 1644 | New Year's Day |
| 2 | Monday, 25 January 1644 | São Paulo City Anniversary |
| 3 | Tuesday, 9 February 1644 | Carnival Tuesday |
| 4 | Friday, 25 March 1644 | Good Friday |
| 5 | Thursday, 21 April 1644 | Tiradentes Day |
| 6 | Sunday, 1 May 1644 | Labour Day |
| 7 | Thursday, 26 May 1644 | Corpus Christi |
| 8 | Saturday, 9 July 1644 | Constitutionalist Revolution |
| 9 | Wednesday, 7 September 1644 | Independence Day |
| 10 | Wednesday, 12 October 1644 | Our Lady of Aparecida |
| 11 | Wednesday, 2 November 1644 | All Souls' Day |
| 12 | Tuesday, 15 November 1644 | Republic Proclamation Day |
| 13 | Sunday, 25 December 1644 | Christmas Day |