Define a period

...

How many working days in year 2012?

Here is the detail of the calculation:

Because 2012 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 2012.

Here is the list of these 8 public holidays:

1. Sexta-Feira Santa : Friday, 6 April, 2012
2. Dia da Liberdade : Wednesday, 25 April, 2012
3. Dia do Trabalhador : Tuesday, 1 May, 2012
4. Corpo de Deus : Thursday, 7 June, 2012
5. Assunção de Nossa Senhora : Wednesday, 15 August, 2012
6. Implantação da República : Friday, 5 October, 2012
7. Todos os Santos : Thursday, 1 November, 2012
8. Natal : Tuesday, 25 December, 2012

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

1. Solenidade da Santa Mãe de Deus : Sunday, 1 January, 2012
2. Páscoa : Sunday, 8 April, 2012
3. Dia de Portugal : Sunday, 10 June, 2012
4. Restauração da Independência : Saturday, 1 December, 2012
5. Dia da Imaculada Conceição : Saturday, 8 December, 2012