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How many working days in year 1993?

Here is the detail of the calculation:

Because 1993 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 7 public holidays that do not fall during a weekend and we obtain 253 working days in 1993.

Here is the list of these 7 public holidays:

1. Pesach : вторник, 6 апрель, 1993
2. Shvi'i shel Pesach : понедельник, 12 апрель, 1993
3. Yom Ha-Atzmaut : понедельник, 26 апрель, 1993
4. Shavuot : среда, 26 май, 1993
5. Rosh Hashanah : четверг, 16 сентябрь, 1993
6. Sukkot : четверг, 30 сентябрь, 1993
7. Shemini Atzeret / Simchat Torah : четверг, 7 октябрь, 1993

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

1. Rosh Hashanah : пятница, 17 сентябрь, 1993
2. Yom Kippur : суббота, 25 сентябрь, 1993