Определить период

...

How many working days in year 1912?

Here is the detail of the calculation:

Because 1912 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 1912.

Here is the list of these 10 public holidays:

1. New Year's Day : понедельник, 1 январь, 1912
2. Australia Day : пятница, 26 январь, 1912
3. Eight Hours Day : понедельник, 11 март, 1912
4. Good Friday : пятница, 5 апрель, 1912
5. Easter Monday : понедельник, 8 апрель, 1912
6. Easter Tuesday : вторник, 9 апрель, 1912
7. Anzac Day : четверг, 25 апрель, 1912
8. King's Birthday : понедельник, 10 июнь, 1912
9. Christmas Day : среда, 25 декабрь, 1912
10. Boxing Day : четверг, 26 декабрь, 1912