Определить период

...

How many working days in year 1968?

Here is the detail of the calculation:

Because 1968 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 253 working days in 1968.

Here is the list of these 9 public holidays:

1. New Year's Day : понедельник, 1 январь, 1968
2. St. Patrick's Day (substitute day) : понедельник, 18 март, 1968
3. Easter Monday : понедельник, 15 апрель, 1968
4. Early May Bank Holiday : понедельник, 6 май, 1968
5. June Bank Holiday : понедельник, 3 июнь, 1968
6. Summer Bank Holiday : понедельник, 5 август, 1968
7. October Bank Holiday : понедельник, 28 октябрь, 1968
8. Christmas Day : среда, 25 декабрь, 1968
9. St. Stephen's Day : четверг, 26 декабрь, 1968

And here is the public holiday falling on a weekend:

1. St. Patrick's Day : воскресенье, 17 март, 1968