定义一个时期

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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 8 public holidays that do not fall during a weekend and we obtain 254 working days in 2020.

Here is the list of these 8 public holidays:

1. Jour de l'An : 星期三, 2020, 01, 1
2. Saint-Berchtold : 星期四, 2020, 01, 2
3. Vendredi Saint : 星期五, 2020, 04, 10
4. Lundi de Pâques : 星期一, 2020, 04, 13
5. Fête du Travail : 星期五, 2020, 05, 1
6. Jeudi de l'Ascension : 星期四, 2020, 05, 21
7. Lundi de la Pentecôte : 星期一, 2020, 06, 1
8. Noël : 星期五, 2020, 12, 25

And here are the 2 public holidays falling on a weekend:

1. Fête Nationale suisse : 星期六, 2020, 08, 1
2. Saint Etienne : 星期六, 2020, 12, 26