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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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1987.

Here is the list of these 9 public holidays:

1. New Year's Day : четверг, 1 январь, 1987
2. Epiphany : вторник, 6 январь, 1987
3. Easter Monday : понедельник, 20 апрель, 1987
4. Labour Day : пятница, 1 май, 1987
5. Corpus Christi : четверг, 18 июнь, 1987
6. Anti-Fascist Struggle Day : понедельник, 22 июнь, 1987
7. Victory and Homeland Thanksgiving Day : среда, 5 август, 1987
8. Remembrance Day : среда, 18 ноябрь, 1987
9. Christmas Day : пятница, 25 декабрь, 1987

And here are the 5 public holidays falling on a weekend:

1. Easter : воскресенье, 19 апрель, 1987
2. National Day : суббота, 30 май, 1987
3. Assumption Day : суббота, 15 август, 1987
4. All Saints' Day : воскресенье, 1 ноябрь, 1987
5. St. Stephen's Day : суббота, 26 декабрь, 1987