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How many working days in year 1937?

Here is the detail of the calculation:

Because 1937 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 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1937.

Here is the list of these 12 public holidays:

1. Confraternização Universal : пятница, 1 январь, 1937
2. Terça-feira de Carnaval : вторник, 9 февраль, 1937
3. Dia de São José : пятница, 19 март, 1937
4. Data magna do estado Ceará : четверг, 25 март, 1937
5. Sexta Feira Santa ou Paixão de Cristo : пятница, 26 март, 1937
6. Tiradentes : среда, 21 апрель, 1937
7. Corpus Christi : четверг, 27 май, 1937
8. Independência do Brasil : вторник, 7 сентябрь, 1937
9. Criação do Território Federal : понедельник, 13 сентябрь, 1937
10. Nossa Senhora Aparecida : вторник, 12 октябрь, 1937
11. Finados : вторник, 2 ноябрь, 1937
12. Proclamação da República Brasileira : понедельник, 15 ноябрь, 1937

And here are the 2 public holidays falling on a weekend:

1. Dia do Trabalho : суббота, 1 май, 1937
2. Natal : суббота, 25 декабрь, 1937