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How many working days in year 1919?

Here is the detail of the calculation:

Because 1919 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1919.

Here is the list of these 8 public holidays:

1. Purim : воскресенье, 16 март, 1919
2. Pesach : вторник, 15 апрель, 1919
3. Shvi'i shel Pesach : понедельник, 21 апрель, 1919
4. Yom Ha-Atzmaut : понедельник, 5 май, 1919
5. Shavuot : среда, 4 июнь, 1919
6. Rosh Hashanah : четверг, 25 сентябрь, 1919
7. Sukkot : четверг, 9 октябрь, 1919
8. Shemini Atzeret / Simchat Torah : четверг, 16 октябрь, 1919

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

1. Rosh Hashanah : пятница, 26 сентябрь, 1919
2. Yom Kippur : суббота, 4 октябрь, 1919