Define a period

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How many working days in year 1942?

Here is the detail of the calculation:

Because 1942 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 1942.

Here is the list of these 8 public holidays:

1. Nieuwjaarsdag : Thursday, 1 January, 1942
2. Paasmaandag : Monday, 6 April, 1942
3. Dag van de Arbeid : Friday, 1 May, 1942
4. Hemelvaartsdag : Thursday, 14 May, 1942
5. Pinkstermaandag : Monday, 25 May, 1942
6. Nationale Feestdag : Tuesday, 21 July, 1942
7. Wapenstilstand : Wednesday, 11 November, 1942
8. Kerstmis : Friday, 25 December, 1942

And here are the 3 public holidays falling on a weekend:

1. Onze-Lieve-Vrouw Hemelvaart : Saturday, 15 August, 1942
2. Allerheiligen : Sunday, 1 November, 1942
3. Koningsdag : Sunday, 15 November, 1942