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How many working days in year 1976?

Here is the detail of the calculation:

Because 1976 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 6 public holidays that do not fall during a weekend and we obtain 255 working days in 1976.

Here is the list of these 6 public holidays:

1. Purim : вторник, 16 март, 1976
2. Pesach : четверг, 15 апрель, 1976
3. Shvi'i shel Pesach : среда, 21 апрель, 1976
4. Yom Ha-Atzmaut : среда, 5 май, 1976
5. Rosh Hashanah : воскресенье, 26 сентябрь, 1976
6. Yom Kippur : понедельник, 4 октябрь, 1976

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

1. Shavuot : пятница, 4 июнь, 1976
2. Rosh Hashanah : суббота, 25 сентябрь, 1976
3. Sukkot : суббота, 9 октябрь, 1976
4. Shemini Atzeret / Simchat Torah : суббота, 16 октябрь, 1976