Определить период

...

How many working days in year 2104?

Here is the detail of the calculation:

Because 2104 is a leap year, it has 366 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 253 working days in 2104.

Here is the list of these 9 public holidays:

1. New Year's Day : вторник, 1 январь, 2104
2. Good Friday : пятница, 11 апрель, 2104
3. Spring Day : четверг, 1 май, 2104
4. Victory Day : понедельник, 23 июнь, 2104
5. Midsummer Day : вторник, 24 июнь, 2104
6. Independence Restoration Day : среда, 20 август, 2104
7. Christmas Eve : среда, 24 декабрь, 2104
8. Christmas Day : четверг, 25 декабрь, 2104
9. Second Day of Christmas : пятница, 26 декабрь, 2104

And here are the 3 public holidays falling on a weekend:

1. Independence Day : воскресенье, 24 февраль, 2104
2. Easter : воскресенье, 13 апрель, 2104
3. Pentecost : воскресенье, 1 июнь, 2104