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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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2016.
 Here is the list of these 11 public holidays: 
 
 1. Año Nuevo : Friday, 1 January, 2016 
2. Lunes de Carnaval : Monday, 8 February, 2016 
3. Martes de Carnaval : Tuesday, 9 February, 2016 
4. Jueves Santo : Thursday, 24 March, 2016 
5. Viernes Santo : Friday, 25 March, 2016 
6. Declaración de la Independencia : Tuesday, 19 April, 2016 
7. Celebración de la constitución de un primer gobierno dentro del proceso de independencia nacional iniciado en la Revolución de Mayo. : Wednesday, 25 May, 2016 
8. Batalla de Carabobo : Friday, 24 June, 2016 
9. Día de San Pedro y San Pablo : Wednesday, 29 June, 2016 
10. Conmemora de la Declaración de independencia nacional de Venezuela (5 de julio de 1811) : Tuesday, 5 July, 2016 
11. Día de la Resistencia Indígena : Wednesday, 12 October, 2016 
And here are the 5 public holidays falling on a weekend:
1. Día Internacional de los Trabajadores : Sunday, 1 May, 2016 
2. Natalicio del libertador Simón Bolívar : Sunday, 24 July, 2016 
3. Nochebuena : Saturday, 24 December, 2016 
4. Navidad : Sunday, 25 December, 2016 
5. Nochevieja : Saturday, 31 December, 2016