Define a period

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How many working days in year 2005?

Here is the detail of the calculation:

Because 2005 is not a leap year, it has 365 days.

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

Now, let's remove 5 public holidays that do not fall during a weekend and we obtain 255 working days in 2005.

Here is the list of these 5 public holidays:

1. Goede Vrijdag : Friday, 25 March, 2005
2. Tweede Paasdag : Monday, 28 March, 2005
3. Bevrijdingsdag : Thursday, 5 May, 2005
4. Tweede Pinksterdag : Monday, 16 May, 2005
5. Tweede Kerstdag : Monday, 26 December, 2005

And here are the 5 public holidays falling on a weekend:

1. Nieuwjaar : Saturday, 1 January, 2005
2. Eerste Paasdag : Sunday, 27 March, 2005
3. Koninginnedag : Saturday, 30 April, 2005
4. Eerste Pinksterdag : Sunday, 15 May, 2005
5. Eerste Kerstdag : Sunday, 25 December, 2005