Определить период

...

How many working days in year 1953?

Here is the detail of the calculation:

Because 1953 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 13 public holidays that do not fall during a weekend and we obtain 248 working days in 1953.

Here is the list of these 13 public holidays:

1. New Year's Day : четверг, январь 1, 1953
2. Martin Luther King Day : понедельник, январь 19, 1953
3. Washington's Birthday : понедельник, февраль 16, 1953
4. Prince Jonah Kuhio Kalanianaole Day : четверг, март 26, 1953
5. Good Friday : пятница, апрель 3, 1953
6. Memorial Day : понедельник, май 25, 1953
7. King Kamehameha I Day : четверг, июнь 11, 1953
8. Independence Day (observance) : пятница, июль 3, 1953
9. Statehood Day : пятница, август 21, 1953
10. Labor Day : понедельник, сентябрь 7, 1953
11. Veterans Day : среда, ноябрь 11, 1953
12. Thanksgiving : четверг, ноябрь 26, 1953
13. Christmas : пятница, декабрь 25, 1953

And here is the public holiday falling on a weekend:

1. Independence Day : суббота, июль 4, 1953