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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. Epiphany : понедельник, 6 январь, 1964
3. Easter Monday : понедельник, 30 март, 1964
4. Labour Day : пятница, 1 май, 1964
5. Corpus Christi : четверг, 28 май, 1964
6. Independence Day : среда, 11 ноябрь, 1964
7. Christmas Day : пятница, 25 декабрь, 1964

And here are the 6 public holidays falling on a weekend:

1. Easter Sunday : воскресенье, 29 март, 1964
2. Constitution Day : воскресенье, 3 май, 1964
3. Pentecost Sunday : воскресенье, 17 май, 1964
4. Assumption of Mary : суббота, 15 август, 1964
5. All Saints' Day : воскресенье, 1 ноябрь, 1964
6. Boxing Day : суббота, 26 декабрь, 1964