Public holidays
1450, Brasil, Piauí
| # | Date | Public holiday |
|---|---|---|
| 1 | Tuesday, 1 January 1450 | New Year's Day |
| 2 | Tuesday, 19 February 1450 | Carnival Tuesday |
| 3 | Friday, 5 April 1450 | Good Friday |
| 4 | Sunday, 21 April 1450 | Tiradentes Day |
| 5 | Wednesday, 1 May 1450 | Labour Day |
| 6 | Thursday, 6 June 1450 | Corpus Christi |
| 7 | Saturday, 7 September 1450 | Independence Day |
| 8 | Saturday, 12 October 1450 | Our Lady of Aparecida |
| 9 | Saturday, 19 October 1450 | Piauí Day |
| 10 | Saturday, 2 November 1450 | All Souls' Day |
| 11 | Friday, 15 November 1450 | Republic Proclamation Day |
| 12 | Sunday, 8 December 1450 | Immaculate Conception |
| 13 | Wednesday, 25 December 1450 | Christmas Day |