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How many working days in year 1972?

Here is the detail of the calculation:

Because 1972 is a leap year, it has 366 days.

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

Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 250 working days in 1972.

Here is the list of these 10 public holidays:

1. Sexta-Feira Santa : пятница, 31 март, 1972
2. Dia da Liberdade : вторник, 25 апрель, 1972
3. Dia do Trabalhador : понедельник, 1 май, 1972
4. Corpo de Deus : четверг, 1 июнь, 1972
5. Assunção de Nossa Senhora : вторник, 15 август, 1972
6. Implantação da República : четверг, 5 октябрь, 1972
7. Todos os Santos : среда, 1 ноябрь, 1972
8. Restauração da Independência : пятница, 1 декабрь, 1972
9. Dia da Imaculada Conceição : пятница, 8 декабрь, 1972
10. Natal : понедельник, 25 декабрь, 1972

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

1. Solenidade da Santa Mãe de Deus : суббота, 1 январь, 1972
2. Páscoa : воскресенье, 2 апрель, 1972
3. Dia de Portugal : суббота, 10 июнь, 1972