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How many working days in year 1971?

Here is the detail of the calculation:

Because 1971 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 6 public holidays that do not fall during a weekend and we obtain 255 working days in 1971.

Here is the list of these 6 public holidays:

1. New Year's Day : пятница, 1 январь, 1971
2. Epiphany : среда, 6 январь, 1971
3. Good Friday : пятница, 9 апрель, 1971
4. Easter Monday : понедельник, 12 апрель, 1971
5. Ascension Day : четверг, 20 май, 1971
6. Independence Day : понедельник, 6 декабрь, 1971

And here are the 7 public holidays falling on a weekend:

1. Easter Sunday : воскресенье, 11 апрель, 1971
2. May Day : суббота, 1 май, 1971
3. Whit Sunday : воскресенье, 30 май, 1971
4. Midsummer Day : суббота, 26 июнь, 1971
5. All Saints' Day : суббота, 6 ноябрь, 1971
6. Christmas Day : суббота, 25 декабрь, 1971
7. St Stephen's Day : воскресенье, 26 декабрь, 1971