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How many working days in year 1921?

Here is the detail of the calculation:

Because 1921 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 6 public holidays that do not fall during a weekend and we obtain 254 working days in 1921.

Here is the list of these 6 public holidays:

1. Vendredi Saint : пятница, 25 март, 1921
2. Lundi de Pâques : понедельник, 28 март, 1921
3. Jeudi de l'Ascension : четверг, 5 май, 1921
4. Lundi de la Pentecôte : понедельник, 16 май, 1921
5. Fête nationale suisse : понедельник, 1 август, 1921
6. Saint Étienne : понедельник, 26 декабрь, 1921

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

1. Jour de l'An : суббота, 1 январь, 1921
2. Saint-Berchtold : воскресенье, 2 январь, 1921
3. Fête du Travail : воскресенье, 1 май, 1921
4. Noël : воскресенье, 25 декабрь, 1921