Определить период

...

How many working days in year 2080?

Here is the detail of the calculation:

Because 2080 is a leap year, it has 366 days.

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

Now, let's remove 5 public holidays that do not fall during a weekend and we obtain 257 working days in 2080.

Here is the list of these 5 public holidays:

1. New Year's Day : понедельник, 1 январь, 2080
2. Good Friday : пятница, 5 апрель, 2080
3. Labour Day : среда, 1 май, 2080
4. National Day : пятница, 9 август, 2080
5. Christmas Day : среда, 25 декабрь, 2080