Define a period

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How many working days in year 2009?

Here is the detail of the calculation:

Because 2009 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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2009.

Here is the list of these 11 public holidays:

1. Jour de l'An : Thursday, 1 January, 2009
2. Jour de la Sainte Dévote : Tuesday, 27 January, 2009
3. Lundi de Pâques : Monday, 13 April, 2009
4. Fête du Travail : Friday, 1 May, 2009
5. Jeudi de l'Ascension : Thursday, 21 May, 2009
6. Lundi de la Pentecôte : Monday, 1 June, 2009
7. Jour de la fête Dieu : Thursday, 11 June, 2009
8. Fête de la Toussaint : Monday, 2 November, 2009
9. Fête Nationale : Thursday, 19 November, 2009
10. Fête de l'Immaculée Conception : Tuesday, 8 December, 2009
11. Jour de Noël : Friday, 25 December, 2009

And here are the 2 public holidays falling on a weekend:

1. Fête de l'Assomption : Saturday, 15 August, 2009
2. Fête de la Toussaint : Sunday, 1 November, 2009