Define a period

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How many working days in year 1972?

Here is the detail of the calculation:

Because 1972 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 249 working days in 1972.

Here is the list of these 11 public holidays:

1. Jour de la Sainte Dévote : Thursday, 27 January, 1972
2. Lundi de Pâques : Monday, 3 April, 1972
3. Fête du Travail : Monday, 1 May, 1972
4. Jeudi de l'Ascension : Thursday, 11 May, 1972
5. Lundi de la Pentecôte : Monday, 22 May, 1972
6. Jour de la fête Dieu : Thursday, 1 June, 1972
7. Fête de l'Assomption : Tuesday, 15 August, 1972
8. Fête de la Toussaint : Wednesday, 1 November, 1972
9. Fête Nationale : Monday, 20 November, 1972
10. Fête de l'Immaculée Conception : Friday, 8 December, 1972
11. Jour de Noël : Monday, 25 December, 1972

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

1. Jour de l'An : Saturday, 1 January, 1972
2. Fête Nationale : Sunday, 19 November, 1972