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How many working days in year 1976?

Here is the detail of the calculation:

Because 1976 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1976.

Here is the list of these 11 public holidays:

1. Confraternização Universal : четверг, 1 январь, 1976
2. Terça-feira de Carnaval : вторник, 2 март, 1976
3. Sexta Feira Santa ou Paixão de Cristo : пятница, 16 апрель, 1976
4. Tiradentes : среда, 21 апрель, 1976
5. Corpus Christi : четверг, 17 июнь, 1976
6. Adesão do Maranhão à independência do Brasil : среда, 28 июль, 1976
7. Independência do Brasil : вторник, 7 сентябрь, 1976
8. Nossa Senhora Aparecida : вторник, 12 октябрь, 1976
9. Finados : вторник, 2 ноябрь, 1976
10. Proclamação da República Brasileira : понедельник, 15 ноябрь, 1976
11. Dia de Nossa Senhora da Conceição : среда, 8 декабрь, 1976

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

1. Dia do Trabalho : суббота, 1 май, 1976
2. Natal : суббота, 25 декабрь, 1976