Define a period

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How many working days in year 2001?

Here is the detail of the calculation:

Because 2001 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 2001.

Here is the list of these 8 public holidays:

1. Nieuwjaar : Monday, 1 January, 2001
2. Goede Vrijdag : Friday, 13 April, 2001
3. Tweede Paasdag : Monday, 16 April, 2001
4. Koninginnedag : Monday, 30 April, 2001
5. Hemelvaartsdag : Thursday, 24 May, 2001
6. Tweede Pinksterdag : Monday, 4 June, 2001
7. Eerste Kerstdag : Tuesday, 25 December, 2001
8. Tweede Kerstdag : Wednesday, 26 December, 2001

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

1. Eerste Paasdag : Sunday, 15 April, 2001
2. Eerste Pinksterdag : Sunday, 3 June, 2001