Определить период

...

How many working days in year 1997?

Here is the detail of the calculation:

Because 1997 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1997.

Here is the list of these 8 public holidays:

1. New Year's Day : среда, 1 январь, 1997
2. Louis Riel Day : понедельник, 17 февраль, 1997
3. Good Friday : пятница, 28 март, 1997
4. Victoria Day : понедельник, 19 май, 1997
5. Canada Day : вторник, 1 июль, 1997
6. Labour Day : понедельник, 1 сентябрь, 1997
7. Thanksgiving : понедельник, 13 октябрь, 1997
8. Christmas : четверг, 25 декабрь, 1997