Определить период

...

How many working days in year 1988?

Here is the detail of the calculation:

Because 1988 is a leap year, it has 366 days.

Let's remove 53 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 1988.

Here is the list of these 9 public holidays:

1. New Year's Day : пятница, 1 январь, 1988
2. Good Friday : пятница, 1 апрель, 1988
3. Victoria Day : понедельник, 23 май, 1988
4. National Aboriginal Day : вторник, 21 июнь, 1988
5. Canada Day : пятница, 1 июль, 1988
6. Discovery Day : понедельник, 15 август, 1988
7. Labour Day : понедельник, 5 сентябрь, 1988
8. Thanksgiving : понедельник, 10 октябрь, 1988
9. Remembrance Day : пятница, 11 ноябрь, 1988

And here is the public holiday falling on a weekend:

1. Christmas : воскресенье, 25 декабрь, 1988