Определить период

...

How many working days in year 2071?

Here is the detail of the calculation:

Because 2071 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 5 public holidays that do not fall during a weekend and we obtain 256 working days in 2071.

Here is the list of these 5 public holidays:

1. New Year's Day : четверг, 1 январь, 2071
2. Good Friday : пятница, 17 апрель, 2071
3. Labour Day : пятница, 1 май, 2071
4. National Day : понедельник, 10 август, 2071
5. Christmas Day : пятница, 25 декабрь, 2071

And here is the public holiday falling on a weekend:

1. National Day : воскресенье, 9 август, 2071