Определить период

...

How many working days in year 2105?

Here is the detail of the calculation:

Because 2105 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2105.

Here is the list of these 8 public holidays:

1. New Year's Day : четверг, 1 январь, 2105
2. Good Friday : пятница, 3 апрель, 2105
3. Easter Monday : понедельник, 6 апрель, 2105
4. Labour Day : пятница, 1 май, 2105
5. Pentecost Monday : понедельник, 25 май, 2105
6. State Foundation Day : четверг, 20 август, 2105
7. National Day : пятница, 23 октябрь, 2105
8. Christmas Day : пятница, 25 декабрь, 2105

And here are the 5 public holidays falling on a weekend:

1. National Day : воскресенье, 15 март, 2105
2. Easter Sunday : воскресенье, 5 апрель, 2105
3. Pentecost Sunday : воскресенье, 24 май, 2105
4. All Saints' Day : воскресенье, 1 ноябрь, 2105
5. Second Day of Christmas : суббота, 26 декабрь, 2105