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How many working days in year 1978?

Here is the detail of the calculation:

Because 1978 is not a leap year, it has 365 days.

Let's remove 52 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 1978.

Here is the list of these 8 public holidays:

1. Epiphany : пятница, 6 январь, 1978
2. Clean Monday : понедельник, 13 март, 1978
3. Good Friday : пятница, 28 апрель, 1978
4. Easter Monday : понедельник, 1 май, 1978
5. Pentecost Monday : понедельник, 19 июнь, 1978
6. Assumption : вторник, 15 август, 1978
7. Christmas : понедельник, 25 декабрь, 1978
8. Glorifying Mother of God : вторник, 26 декабрь, 1978

And here are the 5 public holidays falling on a weekend:

1. New Year's Day : воскресенье, 1 январь, 1978
2. Independence Day : суббота, 25 март, 1978
3. Orthodox Easter : воскресенье, 30 апрель, 1978
4. Pentecost : воскресенье, 18 июнь, 1978
5. Ochi Day : суббота, 28 октябрь, 1978