Assistant: Hello! I handle your requests in natural language, such as:
“Analyze the period from November 1, 2025, to April 25, 2028.”
or
“Add 100 business days to February 25, 2026.”
or
“Next Thursday at 2:12 PM + 124 working hours”
Assistant:
I understand all languages.
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 11 public holidays that do not fall during a weekend and we obtain 251 working days in 1980.
Here is the list of these 11 public holidays:
1. Año Nuevo : Tuesday, 1 January, 1980
2. Lunes de Carnaval : Monday, 18 February, 1980
3. Martes de Carnaval : Tuesday, 19 February, 1980
4. Viernes Santo : Friday, 4 April, 1980
5. Día del Trabajo : Friday, 2 May, 1980
6. Batalla de Pichincha : Friday, 23 May, 1980
7. Primer Grito de la Independencia : Monday, 11 August, 1980
8. Independencia de Guayaquil : Friday, 10 October, 1980
9. Independencia de Cuenca : Monday, 3 November, 1980
10. Día de los Difuntos : Tuesday, 4 November, 1980
11. Navidad : Thursday, 25 December, 1980
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