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How many working days in year 2139?

Here is the detail of the calculation:

Because 2139 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 2139.

Here is the list of these 11 public holidays:

1. New Year's Day : четверг, январь 1, 2139
2. Martin Luther King Day : понедельник, январь 19, 2139
3. Good Friday : пятница, апрель 17, 2139
4. Memorial Day : понедельник, май 25, 2139
5. Juneteenth National Independence Day : пятница, июнь 19, 2139
6. Independence Day (observance) : пятница, июль 3, 2139
7. Labor Day : понедельник, сентябрь 7, 2139
8. Veterans Day : среда, ноябрь 11, 2139
9. Thanksgiving : четверг, ноябрь 26, 2139
10. Black Friday : пятница, ноябрь 27, 2139
11. Christmas : пятница, декабрь 25, 2139

And here is the public holiday falling on a weekend:

1. Independence Day : суббота, июль 4, 2139