Public holidays
2100, Brasil, Piauí
| # | Date | Public holiday |
|---|---|---|
| 1 | Friday, 1 January 2100 | New Year's Day |
| 2 | Tuesday, 9 February 2100 | Carnival Tuesday |
| 3 | Friday, 26 March 2100 | Good Friday |
| 4 | Wednesday, 21 April 2100 | Tiradentes Day |
| 5 | Saturday, 1 May 2100 | Labour Day |
| 6 | Thursday, 27 May 2100 | Corpus Christi |
| 7 | Tuesday, 7 September 2100 | Independence Day |
| 8 | Tuesday, 12 October 2100 | Our Lady of Aparecida |
| 9 | Tuesday, 19 October 2100 | Piauí Day |
| 10 | Tuesday, 2 November 2100 | All Souls' Day |
| 11 | Monday, 15 November 2100 | Republic Proclamation Day |
| 12 | Saturday, 20 November 2100 | Black Consciousness Day |
| 13 | Wednesday, 8 December 2100 | Immaculate Conception |
| 14 | Saturday, 25 December 2100 | Christmas Day |