Определить период

...

How many working days in year 1966?

Here is the detail of the calculation:

Because 1966 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 1966.

Here is the list of these 8 public holidays:

1. New Year's Day (observance) : понедельник, 3 январь, 1966
2. Good Friday : пятница, 8 апрель, 1966
3. Easter Monday : понедельник, 11 апрель, 1966
4. National Patriots' Day : понедельник, 23 май, 1966
5. National Holiday of Quebec : пятница, 24 июнь, 1966
6. Canada Day : пятница, 1 июль, 1966
7. Labour Day : понедельник, 5 сентябрь, 1966
8. Thanksgiving : понедельник, 10 октябрь, 1966

And here are the 2 public holidays falling on a weekend:

1. New Year's Day : суббота, 1 январь, 1966
2. Christmas : воскресенье, 25 декабрь, 1966