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How many working days in year 1951?

Here is the detail of the calculation:

Because 1951 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 10 public holidays that do not fall during a weekend and we obtain 251 working days in 1951.

Here is the list of these 10 public holidays:

1. Confraternização Universal : понедельник, 1 январь, 1951
2. Terça-feira de Carnaval : вторник, 6 февраль, 1951
3. Sexta Feira Santa ou Paixão de Cristo : пятница, 23 март, 1951
4. Dia do Trabalho : вторник, 1 май, 1951
5. Corpus Christi : четверг, 24 май, 1951
6. Independência do Brasil : пятница, 7 сентябрь, 1951
7. Nossa Senhora Aparecida : пятница, 12 октябрь, 1951
8. Finados : пятница, 2 ноябрь, 1951
9. Proclamação da República Brasileira : четверг, 15 ноябрь, 1951
10. Natal : вторник, 25 декабрь, 1951

And here is the public holiday falling on a weekend:

1. Tiradentes : суббота, 21 апрель, 1951