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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 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1964.

Here is the list of these 11 public holidays:

1. New Year's Day : среда, январь 1, 1964
2. Martin Luther King Day : понедельник, январь 20, 1964
3. Good Friday : пятница, март 27, 1964
4. Memorial Day : понедельник, май 25, 1964
5. Juneteenth National Independence Day : пятница, июнь 19, 1964
6. Independence Day (observance) : пятница, июль 3, 1964
7. Labor Day : понедельник, сентябрь 7, 1964
8. Veterans Day : среда, ноябрь 11, 1964
9. Thanksgiving : четверг, ноябрь 26, 1964
10. Christmas Eve : четверг, декабрь 24, 1964
11. Christmas : пятница, декабрь 25, 1964

And here are the 2 public holidays falling on a weekend:

1. Independence Day : суббота, июль 4, 1964
2. December 26 : суббота, декабрь 26, 1964