Определить период

...

How many working days in year 1901?

Here is the detail of the calculation:

Because 1901 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1901.

Here is the list of these 9 public holidays:

1. New Year's Day : вторник, 1 январь, 1901
2. Family Day : понедельник, 18 февраль, 1901
3. Good Friday : пятница, 5 апрель, 1901
4. Victoria Day : понедельник, 20 май, 1901
5. Canada Day : понедельник, 1 июль, 1901
6. Labour Day : понедельник, 2 сентябрь, 1901
7. Thanksgiving : понедельник, 14 октябрь, 1901
8. Christmas : среда, 25 декабрь, 1901
9. Boxing Day : четверг, 26 декабрь, 1901