Определить период

...

How many working days in year 2020?

Here is the detail of the calculation:

Because 2020 is a leap year, it has 366 days.

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

Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 252 working days in 2020.

Here is the list of these 10 public holidays:

1. New Year's Day : среда, январь 1, 2020
2. Martin Luther King Day : понедельник, январь 20, 2020
3. Washington's Birthday : понедельник, февраль 17, 2020
4. Memorial Day : понедельник, май 25, 2020
5. Independence Day (observance) : пятница, июль 3, 2020
6. Labor Day : понедельник, сентябрь 7, 2020
7. Columbus Day : понедельник, октябрь 12, 2020
8. Veterans Day : среда, ноябрь 11, 2020
9. Thanksgiving : четверг, ноябрь 26, 2020
10. Christmas : пятница, декабрь 25, 2020

And here is the public holiday falling on a weekend:

1. Independence Day : суббота, июль 4, 2020