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How many working days in year 1981?

Here is the detail of the calculation:

Because 1981 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 7 public holidays that do not fall during a weekend and we obtain 254 working days in 1981.

Here is the list of these 7 public holidays:

1. New Year's Day : четверг, 1 январь, 1981
2. Epiphany : вторник, 6 январь, 1981
3. Easter Monday : понедельник, 20 апрель, 1981
4. Labour Day : пятница, 1 май, 1981
5. Corpus Christi : четверг, 18 июнь, 1981
6. Independence Day : среда, 11 ноябрь, 1981
7. Christmas Day : пятница, 25 декабрь, 1981

And here are the 6 public holidays falling on a weekend:

1. Easter Sunday : воскресенье, 19 апрель, 1981
2. Constitution Day : воскресенье, 3 май, 1981
3. Pentecost Sunday : воскресенье, 7 июнь, 1981
4. Assumption of Mary : суббота, 15 август, 1981
5. All Saints' Day : воскресенье, 1 ноябрь, 1981
6. Boxing Day : суббота, 26 декабрь, 1981