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How many working days in year 1960?

Here is the detail of the calculation:

Because 1960 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1960.

Here is the list of these 9 public holidays:

1. New Year's Day : пятница, 1 январь, 1960
2. Family Day : понедельник, 15 февраль, 1960
3. Good Friday : пятница, 15 апрель, 1960
4. Victoria Day : понедельник, 23 май, 1960
5. Canada Day : пятница, 1 июль, 1960
6. Labour Day : понедельник, 5 сентябрь, 1960
7. Thanksgiving : понедельник, 10 октябрь, 1960
8. Boxing Day : понедельник, 26 декабрь, 1960
9. Christmas (observance) : вторник, 27 декабрь, 1960

And here is the public holiday falling on a weekend:

1. Christmas : воскресенье, 25 декабрь, 1960