How many working days in year 2027?
Here is the detail of the calculation:
Because 2027 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 2027.
 Here is the list of these 6 public holidays: 
 
 1. Jour de l'An : пятница, 1 январь, 2027 
2. Vendredi Saint : пятница, 26 март, 2027 
3. Lundi de Pâques : понедельник, 29 март, 2027 
4. Jeudi de l'Ascension : четверг, 6 май, 2027 
5. Lundi de la Pentecôte : понедельник, 17 май, 2027 
6. Toussaint : понедельник, 1 ноябрь, 2027 
And here are the 3 public holidays falling on a weekend:
1. Fête nationale suisse : воскресенье, 1 август, 2027 
2. Noël : суббота, 25 декабрь, 2027 
3. Saint Étienne : воскресенье, 26 декабрь, 2027