Define a period

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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 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1984.

Here is the list of these 12 public holidays:

1. Viernes Santo : Friday, 20 April, 1984
2. Día Internacional de los Trabajadores : Tuesday, 1 May, 1984
3. Día de las Glorias Navales : Monday, 21 May, 1984
4. San Pedro y San Pablo : Monday, 2 July, 1984
5. Virgen del Carmen : Monday, 16 July, 1984
6. Asunción de la Virgen : Wednesday, 15 August, 1984
7. Fiestas Patrias : Tuesday, 18 September, 1984
8. Día de las Glorias del Ejércitos : Wednesday, 19 September, 1984
9. Día del Descubrimiento de Dos Mundos : Monday, 15 October, 1984
10. Día de Todos los Santos : Thursday, 1 November, 1984
11. Día Nacional de las Iglesias Evangélicas y Protestantes : Friday, 2 November, 1984
12. Navidad : Tuesday, 25 December, 1984

And here are the 3 public holidays falling on a weekend:

1. Año Nuevo : Sunday, 1 January, 1984
2. Sábado Santo : Saturday, 21 April, 1984
3. Día de la Inmaculada Concepción : Saturday, 8 December, 1984