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How many working days in year 2049?
Here is the detail of the calculation:
Because 2049 is not a leap year, it has 365 days.
Let's remove 52 saturdays and 52 sundays. It remains 261 days.
Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2049.
 Here is the list of these 8 public holidays: 
 
 1. Año Nuevo : Friday, 1 January, 2049 
2. Epifanía del Señor : Wednesday, 6 January, 2049 
3. Jueves santo : Thursday, 15 April, 2049 
4. Viernes Santo : Friday, 16 April, 2049 
5. Fiesta nacional de España : Tuesday, 12 October, 2049 
6. Todos los Santos : Monday, 1 November, 2049 
7. Día de la Constitución Española : Monday, 6 December, 2049 
8. Immaculada Concepcíon : Wednesday, 8 December, 2049 
And here are the 4 public holidays falling on a weekend:
1. Día de Andalucía : Sunday, 28 February, 2049 
2. Fiesta del Trabajo : Saturday, 1 May, 2049 
3. Asuncíon de la Virgen : Sunday, 15 August, 2049 
4. Día de Navidad : Saturday, 25 December, 2049