Определить период

...

How many working days in year 1998?

Here is the detail of the calculation:

Because 1998 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 6 public holidays that do not fall during a weekend and we obtain 255 working days in 1998.

Here is the list of these 6 public holidays:

1. New Year's Day : четверг, 1 январь, 1998
2. Heritage Day : понедельник, 16 февраль, 1998
3. Good Friday : пятница, 10 апрель, 1998
4. Canada Day : среда, 1 июль, 1998
5. Labour Day : понедельник, 7 сентябрь, 1998
6. Christmas : пятница, 25 декабрь, 1998