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How many working days in year 1988?

Here is the detail of the calculation:

Because 1988 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 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 1988.

Here is the list of these 7 public holidays:

1. Yom Ha-Atzmaut : четверг, 21 апрель, 1988
2. Shavuot : воскресенье, 22 май, 1988
3. Rosh Hashanah : понедельник, 12 сентябрь, 1988
4. Rosh Hashanah : вторник, 13 сентябрь, 1988
5. Yom Kippur : среда, 21 сентябрь, 1988
6. Sukkot : понедельник, 26 сентябрь, 1988
7. Shemini Atzeret / Simchat Torah : понедельник, 3 октябрь, 1988

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

1. Pesach : суббота, 2 апрель, 1988
2. Shvi'i shel Pesach : пятница, 8 апрель, 1988