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How many working days in year 1990?

Here is the detail of the calculation:

Because 1990 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 1990.

Here is the list of these 11 public holidays:

1. New Year's Day : понедельник, 1 январь, 1990
2. Human Rights Day : среда, 21 март, 1990
3. Good Friday : пятница, 13 апрель, 1990
4. Family Day : понедельник, 16 апрель, 1990
5. Freedom Day : пятница, 27 апрель, 1990
6. Workers' Day : вторник, 1 май, 1990
7. National Women's Day : четверг, 9 август, 1990
8. Heritage Day : понедельник, 24 сентябрь, 1990
9. Day of Reconciliation observance : понедельник, 17 декабрь, 1990
10. Christmas Day : вторник, 25 декабрь, 1990
11. Day of Goodwill : среда, 26 декабрь, 1990

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

1. Youth Day : суббота, 16 июнь, 1990
2. Day of Reconciliation : воскресенье, 16 декабрь, 1990