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How many working days in year 1999?

Here is the detail of the calculation:

Because 1999 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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 1999.

Here is the list of these 11 public holidays:

1. New Year's Day : пятница, январь 1, 1999
2. Martin Luther King Day : понедельник, январь 18, 1999
3. Washington's Birthday : понедельник, февраль 15, 1999
4. Good Friday : пятница, апрель 2, 1999
5. Memorial Day : понедельник, май 31, 1999
6. Independence Day (observance) : понедельник, июль 5, 1999
7. Labor Day : понедельник, сентябрь 6, 1999
8. Veterans Day : четверг, ноябрь 11, 1999
9. Thanksgiving : четверг, ноябрь 25, 1999
10. Christmas (observance) : пятница, декабрь 24, 1999
11. New Year's Day (observance) : пятница, декабрь 31, 1999

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

1. Independence Day : воскресенье, июль 4, 1999
2. Christmas : суббота, декабрь 25, 1999