Define a period

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How many working days in year 1968?

Here is the detail of the calculation:

Because 1968 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1968.

Here is the list of these 11 public holidays:

1. New Year's Day : Monday, 1 January, 1968
2. National Day : Friday, 15 March, 1968
3. Good Friday : Friday, 12 April, 1968
4. Easter Monday : Monday, 15 April, 1968
5. Labour Day : Wednesday, 1 May, 1968
6. Pentecost Monday : Monday, 3 June, 1968
7. State Foundation Day : Tuesday, 20 August, 1968
8. National Day : Wednesday, 23 October, 1968
9. All Saints' Day : Friday, 1 November, 1968
10. Christmas Day : Wednesday, 25 December, 1968
11. Second Day of Christmas : Thursday, 26 December, 1968

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

1. Easter Sunday : Sunday, 14 April, 1968
2. Pentecost Sunday : Sunday, 2 June, 1968