Define a period

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How many working days in year 1941?

Here is the detail of the calculation:

Because 1941 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 10 public holidays that do not fall during a weekend and we obtain 251 working days in 1941.

Here is the list of these 10 public holidays:

1. Nieuwjaarsdag : Wednesday, 1 January, 1941
2. Paasmaandag : Monday, 14 April, 1941
3. Dag van de Arbeid : Thursday, 1 May, 1941
4. Irisfeest : Thursday, 8 May, 1941
5. Hemelvaartsdag : Thursday, 22 May, 1941
6. Pinkstermaandag : Monday, 2 June, 1941
7. Nationale Feestdag : Monday, 21 July, 1941
8. Onze-Lieve-Vrouw Hemelvaart : Friday, 15 August, 1941
9. Wapenstilstand : Tuesday, 11 November, 1941
10. Kerstmis : Thursday, 25 December, 1941

And here is the public holiday falling on a weekend:

1. Allerheiligen : Saturday, 1 November, 1941