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How many working days in year 1984?
Here is the detail of the calculation:
Because 1984 is a leap year, it has 366 days.
Let's remove 52 saturdays and 53 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 1984.
 Here is the list of these 11 public holidays: 
 
 1. Epifanía del Señor : Friday, 6 January, 1984 
2. Jueves santo : Thursday, 19 April, 1984 
3. Viernes Santo : Friday, 20 April, 1984 
4. Lunes de Pascua : Monday, 23 April, 1984 
5. Fiesta del Trabajo : Tuesday, 1 May, 1984 
6. Día de La Rioja : Monday, 11 June, 1984 
7. Asuncíon de la Virgen : Wednesday, 15 August, 1984 
8. Fiesta nacional de España : Friday, 12 October, 1984 
9. Todos los Santos : Thursday, 1 November, 1984 
10. Día de la Constitución Española : Thursday, 6 December, 1984 
11. Día de Navidad : Tuesday, 25 December, 1984 
And here are the 3 public holidays falling on a weekend:
1. Año Nuevo : Sunday, 1 January, 1984 
2. Día de La Rioja : Saturday, 9 June, 1984 
3. Immaculada Concepcíon : Saturday, 8 December, 1984