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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 7 public holidays that do not fall during a weekend and we obtain 255 working days in 1964.

Here is the list of these 7 public holidays:

1. New Year's Day : среда, 1 январь, 1964
2. New Year's Holiday : четверг, 2 январь, 1964
3. Orthodox Christmas Day : вторник, 7 январь, 1964
4. National Day Holiday : понедельник, 17 февраль, 1964
5. Great Friday : пятница, 1 май, 1964
6. Easter Monday : понедельник, 4 май, 1964
7. Armistice Day : среда, 11 ноябрь, 1964

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

1. National Day : суббота, 15 февраль, 1964
2. National Day Holiday : воскресенье, 16 февраль, 1964
3. Orthodox Easter Saturday : суббота, 2 май, 1964
4. Easter : воскресенье, 3 май, 1964