Определить период

...

How many working days in year 1992?

Here is the detail of the calculation:

Because 1992 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 254 working days in 1992.

Here is the list of these 8 public holidays:

1. Purim : четверг, 19 март, 1992
2. Yom Ha-Atzmaut : четверг, 7 май, 1992
3. Shavuot : воскресенье, 7 июнь, 1992
4. Rosh Hashanah : понедельник, 28 сентябрь, 1992
5. Rosh Hashanah : вторник, 29 сентябрь, 1992
6. Yom Kippur : среда, 7 октябрь, 1992
7. Sukkot : понедельник, 12 октябрь, 1992
8. Shemini Atzeret / Simchat Torah : понедельник, 19 октябрь, 1992

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

1. Pesach : суббота, 18 апрель, 1992
2. Shvi'i shel Pesach : пятница, 24 апрель, 1992