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How many working days in year 1981?

Here is the detail of the calculation:

Because 1981 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 1981.

Here is the list of these 12 public holidays:

1. New Year's Day : четверг, 1 январь, 1981
2. National day : вторник, 3 март, 1981
3. Orthodox Easter Friday : пятница, 24 апрель, 1981
4. Orthodox Easter Monday : понедельник, 27 апрель, 1981
5. Labour Day : пятница, 1 май, 1981
6. St. George's Day : среда, 6 май, 1981
7. Culture and Literacy Day (observance) : понедельник, 25 май, 1981
8. Unification Day (observance) : понедельник, 7 сентябрь, 1981
9. Independence Day : вторник, 22 сентябрь, 1981
10. Christmas Eve : четверг, 24 декабрь, 1981
11. Christmas Day : пятница, 25 декабрь, 1981
12. Christmas Day (observance) : понедельник, 28 декабрь, 1981

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

1. Orthodox Easter Saturday : суббота, 25 апрель, 1981
2. Orthodox Easter Sunday : воскресенье, 26 апрель, 1981
3. Culture and Literacy Day : воскресенье, 24 май, 1981
4. Unification Day : воскресенье, 6 сентябрь, 1981
5. Boxing day : суббота, 26 декабрь, 1981