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How many working days in year 1965?

Here is the detail of the calculation:

Because 1965 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 6 public holidays that do not fall during a weekend and we obtain 255 working days in 1965.

Here is the list of these 6 public holidays:

1. Jour de l'An : пятница, 1 январь, 1965
2. Vendredi Saint : пятница, 16 апрель, 1965
3. Jeudi de l'Ascension : четверг, 27 май, 1965
4. Fête-Dieu : четверг, 17 июнь, 1965
5. Toussaint : понедельник, 1 ноябрь, 1965
6. Immaculée Conception : среда, 8 декабрь, 1965

And here are the 3 public holidays falling on a weekend:

1. Fête nationale suisse : воскресенье, 1 август, 1965
2. Assomption : воскресенье, 15 август, 1965
3. Noël : суббота, 25 декабрь, 1965