How many working days in year 1980?
Here is the detail of the calculation:
Because 1980 is a leap year, it has 366 days.
Let's remove 52 saturdays and 52 sundays. It remains 262 days.
Now, let's remove 17 public holidays that do not fall during a weekend and we obtain 245 working days in 1980.
Here is the list of these 17 public holidays:
1. Año Nuevo : Tuesday, 1 January, 1980
2. Día de los Reyes Magos : Monday, 7 January, 1980
3. Día de San José : Monday, 24 March, 1980
4. Jueves Santo : Thursday, 3 April, 1980
5. Viernes Santo : Friday, 4 April, 1980
6. Primero de Mayo : Thursday, 1 May, 1980
7. La Ascensión del Señor : Monday, 19 May, 1980
8. Corpus Christi : Monday, 9 June, 1980
9. El Sagrado Corazón de Jesús : Monday, 16 June, 1980
10. San Pedro y San Pablo : Monday, 30 June, 1980
11. Batalla de Boyaca : Thursday, 7 August, 1980
12. La Asunción de la Virgen : Monday, 18 August, 1980
13. Día de la Raza : Monday, 13 October, 1980
14. Día de Todos los Santos : Monday, 3 November, 1980
15. Independencia de Cartagena : Monday, 17 November, 1980
16. Día de la Inmaculada Concepción : Monday, 8 December, 1980
17. Navidad : Thursday, 25 December, 1980
And here are the 2 public holidays falling on a weekend:
1. Domingo de Pascua : Sunday, 6 April, 1980
2. Grito de Independencia : Sunday, 20 July, 1980