Define a period

...

How many working days in year 2016?

Here is the detail of the calculation:

Because 2016 is a leap year, it has 366 days.

Let's remove 53 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 2016.

Here is the list of these 6 public holidays:

1. Año Nuevo : Friday, 1 January, 2016
2. Día de la Constitución : Monday, 1 February, 2016
3. Natalicio de Benito Juárez : Monday, 21 March, 2016
4. Viernes Santo : Friday, 25 March, 2016
5. Día de la Independencia : Friday, 16 September, 2016
6. Día de la Revolución : Monday, 21 November, 2016

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

1. Día del Trabajo : Sunday, 1 May, 2016
2. Navidad : Sunday, 25 December, 2016