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How many working days in year 1987?

Here is the detail of the calculation:

Because 1987 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 1987.

Here is the list of these 6 public holidays:

1. New Year's Day : четверг, 1 январь, 1987
2. National Sovereignty and Children's Day : четверг, 23 апрель, 1987
3. Labour and Solidarity Day : пятница, 1 май, 1987
4. Commemoration of Atatürk, Youth and Sports Day : вторник, 19 май, 1987
5. Republic Day Eve : среда, 28 октябрь, 1987
6. Republic Day : четверг, 29 октябрь, 1987

And here is the public holiday falling on a weekend:

1. Victory Day : воскресенье, 30 август, 1987