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How many working days in year 1982?

Here is the detail of the calculation:

Because 1982 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 5 public holidays that do not fall during a weekend and we obtain 255 working days in 1982.

Here is the list of these 5 public holidays:

1. Pesach : четверг, 8 апрель, 1982
2. Shvi'i shel Pesach : среда, 14 апрель, 1982
3. Yom Ha-Atzmaut : среда, 28 апрель, 1982
4. Rosh Hashanah : воскресенье, 19 сентябрь, 1982
5. Yom Kippur : понедельник, 27 сентябрь, 1982

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

1. Shavuot : пятница, 28 май, 1982
2. Rosh Hashanah : суббота, 18 сентябрь, 1982
3. Sukkot : суббота, 2 октябрь, 1982
4. Shemini Atzeret / Simchat Torah : суббота, 9 октябрь, 1982