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How many working days in year 1956?

Here is the detail of the calculation:

Because 1956 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 14 public holidays that do not fall during a weekend and we obtain 247 working days in 1956.

Here is the list of these 14 public holidays:

1. New Year's Day (observance) : понедельник, январь 2, 1956
2. Martin Luther King Day : понедельник, январь 16, 1956
3. Good Friday : пятница, март 30, 1956
4. Memorial Day : понедельник, май 28, 1956
5. Juneteenth National Independence Day : вторник, июнь 19, 1956
6. Independence Day : среда, июль 4, 1956
7. Labor Day : понедельник, сентябрь 3, 1956
8. Columbus Day : понедельник, октябрь 8, 1956
9. Election Day : вторник, ноябрь 6, 1956
10. Veterans Day (observance) : понедельник, ноябрь 12, 1956
11. Thanksgiving : четверг, ноябрь 22, 1956
12. Black Friday : пятница, ноябрь 23, 1956
13. Christmas Eve : понедельник, декабрь 24, 1956
14. Christmas : вторник, декабрь 25, 1956

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

1. New Year's Day : воскресенье, январь 1, 1956
2. Veterans Day : воскресенье, ноябрь 11, 1956