Define a period

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How many working days in year 1972?

Here is the detail of the calculation:

Because 1972 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 260 days.

Now, let's remove 17 public holidays that do not fall during a weekend and we obtain 243 working days in 1972.

Here is the list of these 17 public holidays:

1. Día de los Reyes Magos : Monday, 10 January, 1972
2. Día de San José : Monday, 20 March, 1972
3. Jueves Santo : Thursday, 30 March, 1972
4. Viernes Santo : Friday, 31 March, 1972
5. Primero de Mayo : Monday, 1 May, 1972
6. La Ascensión del Señor : Monday, 15 May, 1972
7. Corpus Christi : Monday, 5 June, 1972
8. El Sagrado Corazón de Jesús : Monday, 12 June, 1972
9. San Pedro y San Pablo : Monday, 3 July, 1972
10. Grito de Independencia : Thursday, 20 July, 1972
11. Batalla de Boyaca : Monday, 7 August, 1972
12. La Asunción de la Virgen : Monday, 21 August, 1972
13. Día de la Raza : Monday, 16 October, 1972
14. Día de Todos los Santos : Monday, 6 November, 1972
15. Independencia de Cartagena : Monday, 13 November, 1972
16. Día de la Inmaculada Concepción : Friday, 8 December, 1972
17. Navidad : Monday, 25 December, 1972

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

1. Año Nuevo : Saturday, 1 January, 1972
2. Domingo de Pascua : Sunday, 2 April, 1972