Определить период

...

How many working days in year 1984?

Here is the detail of the calculation:

Because 1984 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1984.

Here is the list of these 12 public holidays:

1. New Year's Day (observance) : понедельник, январь 2, 1984
2. Martin Luther King Day : понедельник, январь 16, 1984
3. Washington's Birthday : понедельник, февраль 20, 1984
4. Seward's Day : понедельник, март 26, 1984
5. Memorial Day : понедельник, май 28, 1984
6. Juneteenth National Independence Day : вторник, июнь 19, 1984
7. Independence Day : среда, июль 4, 1984
8. Labor Day : понедельник, сентябрь 3, 1984
9. Alaska Day : четверг, октябрь 18, 1984
10. Veterans Day (observance) : понедельник, ноябрь 12, 1984
11. Thanksgiving : четверг, ноябрь 22, 1984
12. Christmas : вторник, декабрь 25, 1984

And here are the 2 public holidays falling on a weekend:

1. New Year's Day : воскресенье, январь 1, 1984
2. Veterans Day : воскресенье, ноябрь 11, 1984