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How many working days in year 1987?

Here is the detail of the calculation:

Because 1987 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 1987.

Here is the list of these 6 public holidays:

1. Jour de l'An : четверг, 1 январь, 1987
2. Vendredi Saint : пятница, 17 апрель, 1987
3. Jeudi de l'Ascension : четверг, 28 май, 1987
4. Fête-Dieu : четверг, 18 июнь, 1987
5. Immaculée Conception : вторник, 8 декабрь, 1987
6. Noël : пятница, 25 декабрь, 1987

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

1. Fête nationale suisse : суббота, 1 август, 1987
2. Assomption : суббота, 15 август, 1987
3. Toussaint : воскресенье, 1 ноябрь, 1987