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 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 : 星期三, 2020, 01, 1
2. Vendredi Saint : 星期五, 2020, 04, 10
3. Jeudi de l'Ascension : 星期四, 2020, 05, 21
4. Fête-Dieu : 星期四, 2020, 06, 11
5. Immaculée Conception : 星期二, 2020, 12, 8
6. Noël : 星期五, 2020, 12, 25

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

1. Fête Nationale suisse : 星期六, 2020, 08, 1
2. Assomption : 星期六, 2020, 08, 15
3. Toussaint : 星期日, 2020, 11, 1