Define a period

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How many working days in year 2000?

Here is the detail of the calculation:

Because 2000 is a leap year, it has 366 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 2000.

Here is the list of these 9 public holidays:

1. Ouschterméindeg : Monday, 24 April, 2000
2. Dag vun der Aarbecht : Monday, 1 May, 2000
3. Christi Himmelfaart : Thursday, 1 June, 2000
4. Péngschtméindeg : Monday, 12 June, 2000
5. Nationalfeierdag : Friday, 23 June, 2000
6. Léiffrawëschdag : Tuesday, 15 August, 2000
7. Allerhellegen : Wednesday, 1 November, 2000
8. Chrëschtdag : Monday, 25 December, 2000
9. Stiefesdag : Tuesday, 26 December, 2000

And here is the public holiday falling on a weekend:

1. Neijoerschdag : Saturday, 1 January, 2000