Определить период

...

How many working days in year 1921?

Here is the detail of the calculation:

Because 1921 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 252 working days in 1921.

Here is the list of these 8 public holidays:

1. New Year's Day (substitute day) : понедельник, 3 январь, 1921
2. Good Friday : пятница, 25 март, 1921
3. Easter Monday : понедельник, 28 март, 1921
4. Early May Bank Holiday : понедельник, 2 май, 1921
5. Spring Bank Holiday : понедельник, 30 май, 1921
6. Late Summer Bank Holiday : понедельник, 29 август, 1921
7. Christmas Day (substitute day) : понедельник, 26 декабрь, 1921
8. Boxing Day (substitute day) : вторник, 27 декабрь, 1921