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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. National Patriots' Day : понедельник, 21 май, 1973
5. Canada Day (observance) : понедельник, 2 июль, 1973
6. Labour Day : понедельник, 3 сентябрь, 1973
7. Thanksgiving : понедельник, 8 октябрь, 1973
8. Christmas : вторник, 25 декабрь, 1973

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

1. National Holiday of Quebec : воскресенье, 24 июнь, 1973
2. Canada Day : воскресенье, 1 июль, 1973