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 10 public holidays that do not fall during a weekend and we obtain 252 working days in 1980.
Here is the list of these 10 public holidays:
1. Solenidade da Santa Mãe de Deus : вівторок, 1 січень, 1980
2. Sexta-Feira Santa : п'ятниця, 4 квітень, 1980
3. Dia da Liberdade : п'ятниця, 25 квітень, 1980
4. Dia do Trabalhador : четвер, 1 травень, 1980
5. Corpo de Deus : четвер, 5 червень, 1980
6. Dia de Portugal : вівторок, 10 червень, 1980
7. Assunção de Nossa Senhora : п'ятниця, 15 серпень, 1980
8. Restauração da Independência : понеділок, 1 грудень, 1980
9. Dia da Imaculada Conceição : понеділок, 8 грудень, 1980
10. Natal : четвер, 25 грудень, 1980
And here are the 3 public holidays falling on a weekend:
1. Páscoa : неділя, 6 квітень, 1980
2. Implantação da República : неділя, 5 жовтень, 1980
3. Todos os Santos : субота, 1 листопад, 1980
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