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How many working days in year 2057?

Here is the detail of the calculation:

Because 2057 is not a leap year, it has 365 days.

Let's remove 52 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 2057.

Here is the list of these 6 public holidays:

1. Purim : вторник, 20 март, 2057
2. Pesach : четверг, 19 апрель, 2057
3. Shvi'i shel Pesach : среда, 25 апрель, 2057
4. Yom Ha-Atzmaut : среда, 9 май, 2057
5. Rosh Hashanah : воскресенье, 30 сентябрь, 2057
6. Yom Kippur : понедельник, 8 октябрь, 2057

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

1. Shavuot : пятница, 8 июнь, 2057
2. Rosh Hashanah : суббота, 29 сентябрь, 2057
3. Sukkot : суббота, 13 октябрь, 2057
4. Shemini Atzeret / Simchat Torah : суббота, 20 октябрь, 2057