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How many working days in year 1964?

Here is the detail of the calculation:

Because 1964 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 10 public holidays that do not fall during a weekend and we obtain 252 working days in 1964.

Here is the list of these 10 public holidays:

1. New Year's Day : среда, 1 январь, 1964
2. Second Day of the New Year : четверг, 2 январь, 1964
3. Union of the Romanian Principalities : пятница, 24 январь, 1964
4. Orthodox Easter Friday : пятница, 1 май, 1964
5. Orthodox Easter Monday : понедельник, 4 май, 1964
6. Children's Day : понедельник, 1 июнь, 1964
7. Pentecost Monday : понедельник, 22 июнь, 1964
8. St. Andrew's Day : понедельник, 30 ноябрь, 1964
9. National Day : вторник, 1 декабрь, 1964
10. Christmas Day : пятница, 25 декабрь, 1964

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

1. Orthodox Easter Sunday : воскресенье, 3 май, 1964
2. Pentecost Sunday : воскресенье, 21 июнь, 1964
3. Assumption : суббота, 15 август, 1964
4. Boxing day : суббота, 26 декабрь, 1964