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How many working days in year 1960?

Here is the detail of the calculation:

Because 1960 is a leap year, it has 366 days.

Let's remove 53 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 1960.

Here is the list of these 10 public holidays:

1. Solenidade da Santa Mãe de Deus : пятница, 1 январь, 1960
2. Sexta-Feira Santa : пятница, 15 апрель, 1960
3. Dia da Liberdade : понедельник, 25 апрель, 1960
4. Dia de Portugal : пятница, 10 июнь, 1960
5. Corpo de Deus : четверг, 16 июнь, 1960
6. Assunção de Nossa Senhora : понедельник, 15 август, 1960
7. Implantação da República : среда, 5 октябрь, 1960
8. Todos os Santos : вторник, 1 ноябрь, 1960
9. Restauração da Independência : четверг, 1 декабрь, 1960
10. Dia da Imaculada Conceição : четверг, 8 декабрь, 1960

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

1. Páscoa : воскресенье, 17 апрель, 1960
2. Dia do Trabalhador : воскресенье, 1 май, 1960
3. Natal : воскресенье, 25 декабрь, 1960