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How many working days in year 1912?

Here is the detail of the calculation:

Because 1912 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 1912.

Here is the list of these 9 public holidays:

1. Solenidade da Santa Mãe de Deus : понедельник, 1 январь, 1912
2. Sexta-Feira Santa : пятница, 5 апрель, 1912
3. Dia da Liberdade : четверг, 25 апрель, 1912
4. Dia do Trabalhador : среда, 1 май, 1912
5. Corpo de Deus : четверг, 6 июнь, 1912
6. Dia de Portugal : понедельник, 10 июнь, 1912
7. Assunção de Nossa Senhora : четверг, 15 август, 1912
8. Todos os Santos : пятница, 1 ноябрь, 1912
9. Natal : среда, 25 декабрь, 1912

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

1. Páscoa : воскресенье, 7 апрель, 1912
2. Implantação da República : суббота, 5 октябрь, 1912
3. Restauração da Independência : воскресенье, 1 декабрь, 1912
4. Dia da Imaculada Conceição : воскресенье, 8 декабрь, 1912