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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 1973.

Here is the list of these 11 public holidays:

1. New Year's Day : Monday, 1 January, 1973
2. National Day : Thursday, 15 March, 1973
3. Good Friday : Friday, 20 April, 1973
4. Easter Monday : Monday, 23 April, 1973
5. Labour Day : Tuesday, 1 May, 1973
6. Pentecost Monday : Monday, 11 June, 1973
7. State Foundation Day : Monday, 20 August, 1973
8. National Day : Tuesday, 23 October, 1973
9. All Saints' Day : Thursday, 1 November, 1973
10. Christmas Day : Tuesday, 25 December, 1973
11. Second Day of Christmas : Wednesday, 26 December, 1973

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

1. Easter Sunday : Sunday, 22 April, 1973
2. Pentecost Sunday : Sunday, 10 June, 1973