How many working days in year 2025?
Here is the detail of the calculation:
Because 2025 is not a leap year, it has 365 days.
Let's remove 52 saturdays and 52 sundays. It remains 261 days.
Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2025.
 Here is the list of these 9 public holidays: 
 
 1. Confraternização Universal : среда, 1 январь, 2025 
2. Terça-feira de Carnaval : вторник, 4 март, 2025 
3. Sexta Feira Santa ou Paixão de Cristo  : пятница, 18 апрель, 2025 
4. Tiradentes : понедельник, 21 апрель, 2025 
5. Dia do Trabalho : четверг, 1 май, 2025 
6. Dia do evangélico : среда, 18 июнь, 2025 
7. Corpus Christi : четверг, 19 июнь, 2025 
8. Dia Nacional de Zumbi e da Consciência Negra : четверг, 20 ноябрь, 2025 
9. Natal : четверг, 25 декабрь, 2025 
And here are the 5 public holidays falling on a weekend:
1. Criação do estado Rondônia : суббота, 4 январь, 2025 
2. Independência do Brasil : воскресенье, 7 сентябрь, 2025 
3. Nossa Senhora Aparecida : воскресенье, 12 октябрь, 2025 
4. Finados : воскресенье, 2 ноябрь, 2025 
5. Proclamação da República Brasileira : суббота, 15 ноябрь, 2025