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How many working days in year 1975?

Here is the detail of the calculation:

Because 1975 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1975.

Here is the list of these 9 public holidays:

1. New Year's Day : среда, 1 январь, 1975
2. Makar Sankranti : вторник, 14 январь, 1975
3. Maharaja Shivaji Jayanti : среда, 19 февраль, 1975
4. Good Friday : пятница, 28 март, 1975
5. Mesadi : понедельник, 14 апрель, 1975
6. Independence Day : пятница, 15 август, 1975
7. Mahatma Gandhi's Birthday : четверг, 2 октябрь, 1975
8. Christmas Eve : среда, 24 декабрь, 1975
9. Christmas : четверг, 25 декабрь, 1975

And here is the public holiday falling on a weekend:

1. Republic Day : воскресенье, 26 январь, 1975