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How many working days in year 1964?

Here is the detail of the calculation:

Because 1964 is a leap year, it has 366 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 253 working days in 1964.

Here is the list of these 9 public holidays:

1. Solenidade da Santa Mãe de Deus : среда, 1 январь, 1964
2. Sexta-Feira Santa : пятница, 27 март, 1964
3. Dia do Trabalhador : пятница, 1 май, 1964
4. Corpo de Deus : четверг, 28 май, 1964
5. Dia de Portugal : среда, 10 июнь, 1964
6. Implantação da República : понедельник, 5 октябрь, 1964
7. Restauração da Independência : вторник, 1 декабрь, 1964
8. Dia da Imaculada Conceição : вторник, 8 декабрь, 1964
9. Natal : пятница, 25 декабрь, 1964

And here are the 4 public holidays falling on a weekend:

1. Páscoa : воскресенье, 29 март, 1964
2. Dia da Liberdade : суббота, 25 апрель, 1964
3. Assunção de Nossa Senhora : суббота, 15 август, 1964
4. Todos os Santos : воскресенье, 1 ноябрь, 1964