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 10 public holidays that do not fall during a weekend and we obtain 252 working days in 2004.

Here is the list of these 10 public holidays:

1. Año Nuevo : Thursday, 1 January, 2004
2. Lunes de Carnaval : Monday, 23 February, 2004
3. Martes de Carnaval : Tuesday, 24 February, 2004
4. Viernes Santo : Friday, 9 April, 2004
5. Día del Trabajo : Friday, 30 April, 2004
6. Batalla de Pichincha : Monday, 24 May, 2004
7. Primer Grito de la Independencia : Monday, 9 August, 2004
8. Independencia de Guayaquil : Friday, 8 October, 2004
9. Día de los Difuntos : Monday, 1 November, 2004
10. Independencia de Cuenca : Friday, 5 November, 2004

And here is the public holiday falling on a weekend:

1. Navidad : Saturday, 25 December, 2004