Define a period

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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 : Monday, 1 January, 1973
2. Republic Day : Friday, 26 January, 1973
3. Maharaja Shivaji Jayanti : Monday, 19 February, 1973
4. Good Friday : Friday, 20 April, 1973
5. Independence Day : Wednesday, 15 August, 1973
6. Mahatma Gandhi's Birthday : Tuesday, 2 October, 1973
7. Christmas Eve : Monday, 24 December, 1973
8. Christmas : Tuesday, 25 December, 1973

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

1. Makar Sankranti : Sunday, 14 January, 1973
2. Mesadi : Saturday, 14 April, 1973