Define a period

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How many working days in year 1982?

Here is the detail of the calculation:

Because 1982 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 14 public holidays that do not fall during a weekend and we obtain 247 working days in 1982.

Here is the list of these 14 public holidays:

1. Año Nuevo : Friday, 1 January, 1982
2. Jueves Santo : Thursday, 8 April, 1982
3. Viernes Santo : Friday, 9 April, 1982
4. Batalla de Arica y Día de la Bandera : Monday, 7 June, 1982
5. Día de San Pedro y San Pablo : Tuesday, 29 June, 1982
6. Día de la Fuerza Aérea : Friday, 23 July, 1982
7. Día de la Independencia : Wednesday, 28 July, 1982
8. Día de la Independencia : Thursday, 29 July, 1982
9. Batalla de Junin : Friday, 6 August, 1982
10. Día de Santa Rosa de Lima : Monday, 30 August, 1982
11. Combate de Angamos : Friday, 8 October, 1982
12. Día de Todos los Santos : Monday, 1 November, 1982
13. Día de la Inmaculada Concepción : Wednesday, 8 December, 1982
14. Batalla de Ayacucho : Thursday, 9 December, 1982

And here are the 2 public holidays falling on a weekend:

1. Día del Trabajo : Saturday, 1 May, 1982
2. Navidad : Saturday, 25 December, 1982