Define a period

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How many working days in year 2017?

Here is the detail of the calculation:

Because 2017 is not a leap year, it has 365 days.

Let's remove 52 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 253 working days in 2017.

Here is the list of these 7 public holidays:

1. Goede Vrijdag : Friday, 14 April, 2017
2. Tweede Paasdag : Monday, 17 April, 2017
3. Koningsdag : Thursday, 27 April, 2017
4. Hemelvaartsdag : Thursday, 25 May, 2017
5. Tweede Pinksterdag : Monday, 5 June, 2017
6. Eerste Kerstdag : Monday, 25 December, 2017
7. Tweede Kerstdag : Tuesday, 26 December, 2017

And here are the 3 public holidays falling on a weekend:

1. Nieuwjaar : Sunday, 1 January, 2017
2. Eerste Paasdag : Sunday, 16 April, 2017
3. Eerste Pinksterdag : Sunday, 4 June, 2017