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How many working days in year 1950?
Here is the detail of the calculation:
Because 1950 is not a leap year, it has 365 days.
Let's remove 52 saturdays and 53 sundays. It remains 260 days.
Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 249 working days in 1950.
 Here is the list of these 11 public holidays: 
 
 1. Sexta-Feira Santa : п'ятниця, 7 квітень, 1950 
2. Dia da Liberdade : вівторок, 25 квітень, 1950 
3. Dia do Trabalhador : понеділок, 1 травень, 1950 
4. Corpo de Deus : четвер, 8 червень, 1950 
5. Dia de Santa Isabel : вівторок, 4 липень, 1950 
6. Assunção de Nossa Senhora : вівторок, 15 серпень, 1950 
7. Implantação da República : четвер, 5 жовтень, 1950 
8. Todos os Santos : середа, 1 листопад, 1950 
9. Restauração da Independência : п'ятниця, 1 грудень, 1950 
10. Dia da Imaculada Conceição : п'ятниця, 8 грудень, 1950 
11. Natal : понеділок, 25 грудень, 1950 
And here are the 3 public holidays falling on a weekend:
1. Solenidade da Santa Mãe de Deus : неділя, 1 січень, 1950 
2. Páscoa : неділя, 9 квітень, 1950 
3. Dia de Portugal, de Camões e das Comunidades Portuguesas : субота, 10 червень, 1950