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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 5 public holidays that do not fall during a weekend and we obtain 256 working days in 1965.

Here is the list of these 5 public holidays:

1. Jour de l'An : пятница, 1 январь, 1965
2. Vendredi Saint : пятница, 16 апрель, 1965
3. Lundi de Pâques : понедельник, 19 апрель, 1965
4. Jeudi de l'Ascension : четверг, 27 май, 1965
5. Lundi de la Pentecôte : понедельник, 7 июнь, 1965

And here are the 4 public holidays falling on a weekend:

1. Saint-Berchtold : суббота, 2 январь, 1965
2. Fête nationale suisse : воскресенье, 1 август, 1965
3. Noël : суббота, 25 декабрь, 1965
4. Saint Étienne : воскресенье, 26 декабрь, 1965