Define a period

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How many working days in year 2004?

Here is the detail of the calculation:

Because 2004 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 2004.

Here is the list of these 6 public holidays:

1. Año Nuevo : Thursday, 1 January, 2004
2. Día de la Constitución : Monday, 2 February, 2004
3. Natalicio de Benito Juárez : Monday, 15 March, 2004
4. Viernes Santo : Friday, 9 April, 2004
5. Día de la Independencia : Thursday, 16 September, 2004
6. Día de la Revolución : Monday, 15 November, 2004

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

1. Día del Trabajo : Saturday, 1 May, 2004
2. Navidad : Saturday, 25 December, 2004