Define a period

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How many working days in year 2021?

Here is the detail of the calculation:

Because 2021 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 6 public holidays that do not fall during a weekend and we obtain 255 working days in 2021.

Here is the list of these 6 public holidays:

1. Jour de l'An : Friday, 1 January, 2021
2. Vendredi Saint : Friday, 2 April, 2021
3. Jeudi de l'Ascension : Thursday, 13 May, 2021
4. Fête-Dieu : Thursday, 3 June, 2021
5. Toussaint : Monday, 1 November, 2021
6. Immaculée Conception : Wednesday, 8 December, 2021

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

1. Fête Nationale suisse : Sunday, 1 August, 2021
2. Assomption : Sunday, 15 August, 2021
3. Noël : Saturday, 25 December, 2021