Определить период

...

How many working days in year 1940?

Here is the detail of the calculation:

Because 1940 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 1940.

Here is the list of these 10 public holidays:

1. New Year's Day : понедельник, 1 январь, 1940
2. Easter Monday : понедельник, 25 март, 1940
3. Labour Day : среда, 1 май, 1940
4. Constitution Day : пятница, 3 май, 1940
5. Corpus Christi : четверг, 23 май, 1940
6. Assumption of Mary : четверг, 15 август, 1940
7. All Saints' Day : пятница, 1 ноябрь, 1940
8. Independence Day : понедельник, 11 ноябрь, 1940
9. Christmas Day : среда, 25 декабрь, 1940
10. Boxing Day : четверг, 26 декабрь, 1940

And here are the 3 public holidays falling on a weekend:

1. Epiphany : суббота, 6 январь, 1940
2. Easter Sunday : воскресенье, 24 март, 1940
3. Pentecost Sunday : воскресенье, 12 май, 1940