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How many working days in year 2012?
Here is the detail of the calculation:
Because 2012 is a leap year, it has 366 days.
Let's remove 52 saturdays and 53 sundays. It remains 261 days.
Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 249 working days in 2012.
 Here is the list of these 12 public holidays: 
 
 1. Año Nuevo : Monday, 2 January, 2012 
2. Epifanía del Señor : Friday, 6 January, 2012 
3. Jueves santo : Thursday, 5 April, 2012 
4. Viernes Santo : Friday, 6 April, 2012 
5. Día de Castilla y León : Monday, 23 April, 2012 
6. Fiesta del Trabajo : Tuesday, 1 May, 2012 
7. Asuncíon de la Virgen : Wednesday, 15 August, 2012 
8. Fiesta nacional de España : Friday, 12 October, 2012 
9. Todos los Santos : Thursday, 1 November, 2012 
10. Día de la Constitución Española : Thursday, 6 December, 2012 
11. Immaculada Concepcíon : Monday, 10 December, 2012 
12. Día de Navidad : Tuesday, 25 December, 2012 
And here are the 2 public holidays falling on a weekend:
1. Año Nuevo : Sunday, 1 January, 2012 
2. Immaculada Concepcíon : Saturday, 8 December, 2012