Определить период

...

How many working days in year 1973?

Here is the detail of the calculation:

Because 1973 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1973.

Here is the list of these 8 public holidays:

1. New Year's Day : понедельник, 1 январь, 1973
2. Good Friday : пятница, 20 апрель, 1973
3. Easter Monday : понедельник, 23 апрель, 1973
4. Labour Day : вторник, 1 май, 1973
5. Establishment Day : понедельник, 2 июль, 1973
6. National Day : понедельник, 1 октябрь, 1973
7. Christmas Day : вторник, 25 декабрь, 1973
8. Boxing Day : среда, 26 декабрь, 1973

And here are the 2 public holidays falling on a weekend:

1. Holy Saturday : суббота, 21 апрель, 1973
2. Establishment Day : воскресенье, 1 июль, 1973