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How many working days in year 1939?

Here is the detail of the calculation:

Because 1939 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 7 public holidays that do not fall during a weekend and we obtain 254 working days in 1939.

Here is the list of these 7 public holidays:

1. Pesach : вторник, 4 апрель, 1939
2. Shvi'i shel Pesach : понедельник, 10 апрель, 1939
3. Yom Ha-Atzmaut : понедельник, 24 апрель, 1939
4. Shavuot : среда, 24 май, 1939
5. Rosh Hashanah : четверг, 14 сентябрь, 1939
6. Sukkot : четверг, 28 сентябрь, 1939
7. Shemini Atzeret / Simchat Torah : четверг, 5 октябрь, 1939

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

1. Rosh Hashanah : пятница, 15 сентябрь, 1939
2. Yom Kippur : суббота, 23 сентябрь, 1939