Define a period

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How many working days in year 2109?

Here is the detail of the calculation:

Because 2109 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2109.

Here is the list of these 9 public holidays:

1. Nieuwjaarsdag : Tuesday, 1 January, 2109
2. Paasmaandag : Monday, 22 April, 2109
3. Dag van de Arbeid : Wednesday, 1 May, 2109
4. Hemelvaartsdag : Thursday, 30 May, 2109
5. Pinkstermaandag : Monday, 10 June, 2109
6. Onze-Lieve-Vrouw Hemelvaart : Thursday, 15 August, 2109
7. Allerheiligen : Friday, 1 November, 2109
8. Wapenstilstand : Monday, 11 November, 2109
9. Kerstmis : Wednesday, 25 December, 2109

And here is the public holiday falling on a weekend:

1. Nationale Feestdag : Sunday, 21 July, 2109