Define a period

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How many working days in year 1953?

Here is the detail of the calculation:

Because 1953 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1953.

Here is the list of these 9 public holidays:

1. Solenidade da Santa Mãe de Deus : Thursday, 1 January, 1953
2. Sexta-Feira Santa : Friday, 3 April, 1953
3. Dia do Trabalhador : Friday, 1 May, 1953
4. Corpo de Deus : Thursday, 4 June, 1953
5. Dia de Portugal : Wednesday, 10 June, 1953
6. Implantação da República : Monday, 5 October, 1953
7. Restauração da Independência : Tuesday, 1 December, 1953
8. Dia da Imaculada Conceição : Tuesday, 8 December, 1953
9. Natal : Friday, 25 December, 1953

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

1. Páscoa : Sunday, 5 April, 1953
2. Dia da Liberdade : Saturday, 25 April, 1953
3. Assunção de Nossa Senhora : Saturday, 15 August, 1953
4. Todos os Santos : Sunday, 1 November, 1953