Define a period

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How many working days in year 1984?

Here is the detail of the calculation:

Because 1984 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1984.

Here is the list of these 8 public holidays:

1. Sexta-Feira Santa : Friday, 20 April, 1984
2. Dia da Liberdade : Wednesday, 25 April, 1984
3. Dia do Trabalhador : Tuesday, 1 May, 1984
4. Corpo de Deus : Thursday, 21 June, 1984
5. Assunção de Nossa Senhora : Wednesday, 15 August, 1984
6. Implantação da República : Friday, 5 October, 1984
7. Todos os Santos : Thursday, 1 November, 1984
8. Natal : Tuesday, 25 December, 1984

And here are the 5 public holidays falling on a weekend:

1. Solenidade da Santa Mãe de Deus : Sunday, 1 January, 1984
2. Páscoa : Sunday, 22 April, 1984
3. Dia de Portugal : Sunday, 10 June, 1984
4. Restauração da Independência : Saturday, 1 December, 1984
5. Dia da Imaculada Conceição : Saturday, 8 December, 1984