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How many working days in year 1938?

Here is the detail of the calculation:

Because 1938 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 1938.

Here is the list of these 9 public holidays:

1. Terça-feira de Carnaval : вторник, 1 март, 1938
2. Data magna do estado Ceará : пятница, 25 март, 1938
3. Sexta Feira Santa ou Paixão de Cristo : пятница, 15 апрель, 1938
4. Tiradentes : четверг, 21 апрель, 1938
5. Corpus Christi : четверг, 16 июнь, 1938
6. Independência do Brasil : среда, 7 сентябрь, 1938
7. Nossa Senhora Aparecida : среда, 12 октябрь, 1938
8. Finados : среда, 2 ноябрь, 1938
9. Proclamação da República Brasileira : вторник, 15 ноябрь, 1938

And here are the 3 public holidays falling on a weekend:

1. Confraternização Universal : суббота, 1 январь, 1938
2. Dia do Trabalho : воскресенье, 1 май, 1938
3. Natal : воскресенье, 25 декабрь, 1938