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How many working days in year 1972?

Here is the detail of the calculation:

Because 1972 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 1972.

Here is the list of these 9 public holidays:

1. Maundy Thursday : четверг, 30 март, 1972
2. Good Friday : пятница, 31 март, 1972
3. Easter Monday : понедельник, 3 апрель, 1972
4. Labour Day : понедельник, 1 май, 1972
5. Ascension Day : четверг, 11 май, 1972
6. Constitution Day : среда, 17 май, 1972
7. Whit Monday : понедельник, 22 май, 1972
8. Christmas Day : понедельник, 25 декабрь, 1972
9. St Stephen's Day : вторник, 26 декабрь, 1972

And here are the 3 public holidays falling on a weekend:

1. New Year's Day : суббота, 1 январь, 1972
2. Easter Sunday : воскресенье, 2 апрель, 1972
3. Pentecost : воскресенье, 21 май, 1972