| 1/1/1990, Mon | New Year's Day |
- Note
- Feriado nacional civil (Confraternizacao Universal).
|
| 2/26/1990, Mon | Carnival Monday |
- Note
- Bank closure day after 2 pm (Carnaval Segunda-Feira). Not a feriado nacional civil.
|
| 2/27/1990, Tue | Carnival Tuesday |
- Note
- Bank closure day after 2 pm (Carnaval Terca-Feira). Not a feriado nacional civil.
|
| 4/13/1990, Fri | Good Friday |
- Note
- Feriado nacional (Sexta-Feira Santa).
|
| 4/15/1990, Sun | Easter |
- Note
- A Christian religious observance. Not a Feriado nacional.
|
| 4/21/1990, Sat | Tiradentes |
- Note
- Feriado nacional civil (Tiradentes).
|
| 5/1/1990, Tue | Labour Day |
- Note
- Feriado nacional civil (Dia do Trabalho).
|
| 6/14/1990, Thu | Corpus Christi |
- Note
- Bank closure day (Corpus Christi). Not a feriado nacional civil.
|
| 7/28/1990, Sat | Adesao do Maranhao a Independencia |
- Note
- A state feriado for Maranhao.
|
| 9/7/1990, Fri | Independence Day |
- Note
- Feriado nacional civil (Independencia do Brasil).
|
| 9/8/1990, Sat | Aniversario de Sao Luis |
- Note
- A city-level feriado for Sao Luis.
|
| 10/12/1990, Fri | Our Lady Aparecida |
- Note
- Feriado nacional (Nossa Senhora Aparecida).
|
| 11/2/1990, Fri | All Soul's Day |
- Note
- Feriado nacional civil (Finados / Dia dos Mortos).
|
| 11/15/1990, Thu | Proclamation of the Republic |
- Note
- Feriado nacional civil (Proclamacao da Republica).
|
| 11/20/1990, Tue | Black Awareness Day |
- Note
- Feriado nacional (Dia Nacional de Zumbi e da Consciencia Negra).
|
| 12/24/1990, Mon | Christmas Eve |
- Note
- Bank half-day after 2 pm (Vespera de Natal).
|
| 12/25/1990, Tue | Christmas Day |
- Note
- Feriado nacional civil (Natal).
|
| 12/31/1990, Mon | New Year's Eve |
- Note
- Bank half-day after 2 pm (Vespera de Ano Novo).
|