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How many working days in year 1930?

Here is the detail of the calculation:

Because 1930 is not a leap year, it has 365 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1930.

Here is the list of these 9 public holidays:

1. New Year's Day : среда, январь 1, 1930
2. Martin Luther King Day : понедельник, январь 20, 1930
3. Memorial Day : понедельник, май 26, 1930
4. Juneteenth National Independence Day : четверг, июнь 19, 1930
5. Independence Day : пятница, июль 4, 1930
6. Labor Day : понедельник, сентябрь 1, 1930
7. Veterans Day : вторник, ноябрь 11, 1930
8. Thanksgiving : четверг, ноябрь 27, 1930
9. Christmas : четверг, декабрь 25, 1930