Public holidays
1473, Brasil, Piauí
| # | Date | Public holiday |
|---|---|---|
| 1 | Wednesday, 1 January 1473 | New Year's Day |
| 2 | Tuesday, 4 February 1473 | Carnival Tuesday |
| 3 | Friday, 21 March 1473 | Good Friday |
| 4 | Monday, 21 April 1473 | Tiradentes Day |
| 5 | Thursday, 1 May 1473 | Labour Day |
| 6 | Thursday, 22 May 1473 | Corpus Christi |
| 7 | Sunday, 7 September 1473 | Independence Day |
| 8 | Sunday, 12 October 1473 | Our Lady of Aparecida |
| 9 | Sunday, 19 October 1473 | Piauí Day |
| 10 | Sunday, 2 November 1473 | All Souls' Day |
| 11 | Saturday, 15 November 1473 | Republic Proclamation Day |
| 12 | Monday, 8 December 1473 | Immaculate Conception |
| 13 | Thursday, 25 December 1473 | Christmas Day |