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”
or
“I won't be working first week of next may (going to Greece)”
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 9 public holidays that do not fall during a weekend and we obtain 253 working days in 1980.
Here is the list of these 9 public holidays:
1. Confraternização Universal : tuesday, 1 january, 1980
2. Terça-feira de Carnaval : tuesday, 19 february, 1980
3. Autonomia do Estado Tocantins : tuesday, 18 march, 1980
4. Sexta Feira Santa ou Paixão de Cristo : friday, 4 april, 1980
5. Tiradentes : monday, 21 april, 1980
6. Dia do Trabalho : thursday, 1 may, 1980
7. Corpus Christi : thursday, 5 june, 1980
8. Padroeira do Estado Tocantins : monday, 8 september, 1980
9. Natal : thursday, 25 december, 1980
And here are the 5 public holidays falling on a weekend:
1. Independência do Brasil : sunday, 7 september, 1980
2. Criação do estado Tocantins : sunday, 5 october, 1980
3. Nossa Senhora Aparecida : sunday, 12 october, 1980
4. Finados : sunday, 2 november, 1980
5. Proclamação da República Brasileira : saturday, 15 november, 1980
Save 
Delete 
Copy 
