Public holidays
1688, Brasil, Piauí
| # | Date | Public holiday |
|---|---|---|
| 1 | Thursday, 1 January 1688 | New Year's Day |
| 2 | Tuesday, 2 March 1688 | Carnival Tuesday |
| 3 | Friday, 16 April 1688 | Good Friday |
| 4 | Wednesday, 21 April 1688 | Tiradentes Day |
| 5 | Saturday, 1 May 1688 | Labour Day |
| 6 | Thursday, 17 June 1688 | Corpus Christi |
| 7 | Tuesday, 7 September 1688 | Independence Day |
| 8 | Tuesday, 12 October 1688 | Our Lady of Aparecida |
| 9 | Tuesday, 19 October 1688 | Piauí Day |
| 10 | Tuesday, 2 November 1688 | All Souls' Day |
| 11 | Monday, 15 November 1688 | Republic Proclamation Day |
| 12 | Wednesday, 8 December 1688 | Immaculate Conception |
| 13 | Saturday, 25 December 1688 | Christmas Day |