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How many working days in year 1972?

Here is the detail of the calculation:

Because 1972 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 252 working days in 1972.

Here is the list of these 8 public holidays:

1. Martin Luther King Day : понедельник, январь 17, 1972
2. Memorial Day : понедельник, май 29, 1972
3. Juneteenth National Independence Day : понедельник, июнь 19, 1972
4. Independence Day : вторник, июль 4, 1972
5. Labor Day : понедельник, сентябрь 4, 1972
6. Veterans Day (observance) : пятница, ноябрь 10, 1972
7. Thanksgiving : четверг, ноябрь 23, 1972
8. Christmas : понедельник, декабрь 25, 1972

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

1. New Year's Day : суббота, январь 1, 1972
2. Veterans Day : суббота, ноябрь 11, 1972