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How many working days in year 1949?

Here is the detail of the calculation:

Because 1949 is not a leap year, it has 365 days.

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

Now, let's remove 5 public holidays that do not fall during a weekend and we obtain 255 working days in 1949.

Here is the list of these 5 public holidays:

1. Pesach : четверг, 14 апрель, 1949
2. Shvi'i shel Pesach : среда, 20 апрель, 1949
3. Yom Ha-Atzmaut : среда, 4 май, 1949
4. Rosh Hashanah : воскресенье, 25 сентябрь, 1949
5. Yom Kippur : понедельник, 3 октябрь, 1949

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

1. Shavuot : пятница, 3 июнь, 1949
2. Rosh Hashanah : суббота, 24 сентябрь, 1949
3. Sukkot : суббота, 8 октябрь, 1949
4. Shemini Atzeret / Simchat Torah : суббота, 15 октябрь, 1949