Define a period

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How many working days in year 1996?

Here is the detail of the calculation:

Because 1996 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1996.

Here is the list of these 11 public holidays:

1. Año Nuevo : Monday, 1 January, 1996
2. Viernes Santo : Friday, 5 April, 1996
3. Día Internacional de los Trabajadores : Wednesday, 1 May, 1996
4. Día de las Glorias Navales : Tuesday, 21 May, 1996
5. Virgen del Carmen : Tuesday, 16 July, 1996
6. Asunción de la Virgen : Thursday, 15 August, 1996
7. Fiestas Patrias : Wednesday, 18 September, 1996
8. Día de las Glorias del Ejércitos : Thursday, 19 September, 1996
9. Día Nacional de las Iglesias Evangélicas y Protestantes : Thursday, 31 October, 1996
10. Día de Todos los Santos : Friday, 1 November, 1996
11. Navidad : Wednesday, 25 December, 1996

And here are the 4 public holidays falling on a weekend:

1. Sábado Santo : Saturday, 6 April, 1996
2. San Pedro y San Pablo : Saturday, 29 June, 1996
3. Día del Descubrimiento de Dos Mundos : Saturday, 12 October, 1996
4. Día de la Inmaculada Concepción : Sunday, 8 December, 1996