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How many working days in year 1991?

Here is the detail of the calculation:

Because 1991 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 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1991.

Here is the list of these 12 public holidays:

1. New Year's Day : вторник, 1 январь, 1991
2. National day (observance) : понедельник, 4 март, 1991
3. Orthodox Easter Friday : пятница, 5 апрель, 1991
4. Orthodox Easter Monday : понедельник, 8 апрель, 1991
5. Labour Day : среда, 1 май, 1991
6. St. George's Day : понедельник, 6 май, 1991
7. Culture and Literacy Day : пятница, 24 май, 1991
8. Unification Day : пятница, 6 сентябрь, 1991
9. Independence Day (observance) : понедельник, 23 сентябрь, 1991
10. Christmas Eve : вторник, 24 декабрь, 1991
11. Christmas Day : среда, 25 декабрь, 1991
12. Boxing day : четверг, 26 декабрь, 1991

And here are the 4 public holidays falling on a weekend:

1. National day : воскресенье, 3 март, 1991
2. Orthodox Easter Saturday : суббота, 6 апрель, 1991
3. Orthodox Easter Sunday : воскресенье, 7 апрель, 1991
4. Independence Day : воскресенье, 22 сентябрь, 1991