Define a period

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How many working days in year 1964?

Here is the detail of the calculation:

Because 1964 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1964.

Here is the list of these 11 public holidays:

1. Jour de l'An : Wednesday, 1 January, 1964
2. Jour de la Sainte Dévote : Monday, 27 January, 1964
3. Lundi de Pâques : Monday, 30 March, 1964
4. Fête du Travail : Friday, 1 May, 1964
5. Jeudi de l'Ascension : Thursday, 7 May, 1964
6. Lundi de la Pentecôte : Monday, 18 May, 1964
7. Jour de la fête Dieu : Thursday, 28 May, 1964
8. Fête de la Toussaint : Monday, 2 November, 1964
9. Fête Nationale : Thursday, 19 November, 1964
10. Fête de l'Immaculée Conception : Tuesday, 8 December, 1964
11. Jour de Noël : Friday, 25 December, 1964

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

1. Fête de l'Assomption : Saturday, 15 August, 1964
2. Fête de la Toussaint : Sunday, 1 November, 1964