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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. New Year's Day (substitute day) : понедельник, 3 январь, 1972
2. 2nd January (substitute day) : вторник, 4 январь, 1972
3. Good Friday : пятница, 31 март, 1972
4. Early May Bank Holiday : понедельник, 1 май, 1972
5. Spring Bank Holiday : понедельник, 29 май, 1972
6. Summer Bank Holiday : понедельник, 7 август, 1972
7. St Andrew's Day : четверг, 30 ноябрь, 1972
8. Christmas Day : понедельник, 25 декабрь, 1972
9. Boxing Day : вторник, 26 декабрь, 1972