Определить период

...

How many working days in year 1976?

Here is the detail of the calculation:

Because 1976 is a leap year, it has 366 days.

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

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 255 working days in 1976.

Here is the list of these 7 public holidays:

1. Capodanno : четверг, 1 январь, 1976
2. Epifania : вторник, 6 январь, 1976
3. Lunedì di Pasqua : понедельник, 19 апрель, 1976
4. Festa della Repubblica Italia : среда, 2 июнь, 1976
5. Festa di San Giovanni : четверг, 24 июнь, 1976
6. Ognissanti o Tutti i Santi : понедельник, 1 ноябрь, 1976
7. Immacolata Concezione : среда, 8 декабрь, 1976

And here are the 5 public holidays falling on a weekend:

1. Anniversario Liberazione : воскресенье, 25 апрель, 1976
2. Festa del lavoro : суббота, 1 май, 1976
3. Ferragosto o Assunzione : воскресенье, 15 август, 1976
4. Santo Natale : суббота, 25 декабрь, 1976
5. Santo Stefano : воскресенье, 26 декабрь, 1976