Define a period

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How many working days in year 2020?

Here is the detail of the calculation:

Because 2020 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 6 public holidays that do not fall during a weekend and we obtain 256 working days in 2020.

Here is the list of these 6 public holidays:

1. Jour de l'An : Wednesday, 1 January, 2020
2. Vendredi Saint : Friday, 10 April, 2020
3. Jeudi de l'Ascension : Thursday, 21 May, 2020
4. Fête-Dieu : Thursday, 11 June, 2020
5. Immaculée Conception : Tuesday, 8 December, 2020
6. Noël : Friday, 25 December, 2020

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

1. Fête Nationale suisse : Saturday, 1 August, 2020
2. Assomption : Saturday, 15 August, 2020
3. Toussaint : Sunday, 1 November, 2020