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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 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 252 working days in 1965.

Here is the list of these 8 public holidays:

1. Purim : четверг, 18 март, 1965
2. Yom Ha-Atzmaut : четверг, 6 май, 1965
3. Shavuot : воскресенье, 6 июнь, 1965
4. Rosh Hashanah : понедельник, 27 сентябрь, 1965
5. Rosh Hashanah : вторник, 28 сентябрь, 1965
6. Yom Kippur : среда, 6 октябрь, 1965
7. Sukkot : понедельник, 11 октябрь, 1965
8. Shemini Atzeret / Simchat Torah : понедельник, 18 октябрь, 1965

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

1. Pesach : суббота, 17 апрель, 1965
2. Shvi'i shel Pesach : пятница, 23 апрель, 1965