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. National Sovereignty and Children's Day : четверг, 23 апрель, 1998
3. Labour and Solidarity Day : пятница, 1 май, 1998
4. Commemoration of Atatürk, Youth and Sports Day : вторник, 19 май, 1998
5. Republic Day Eve : среда, 28 октябрь, 1998
6. Republic Day : четверг, 29 октябрь, 1998

And here is the public holiday falling on a weekend:

1. Victory Day : воскресенье, 30 август, 1998