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. Solenidade da Santa Mãe de Deus : вторник, 1 январь, 1980
2. Sexta-Feira Santa : пятница, 4 апрель, 1980
3. Dia da Liberdade : пятница, 25 апрель, 1980
4. Dia do Trabalhador : четверг, 1 май, 1980
5. Dia dos Açores : понедельник, 26 май, 1980
6. Corpo de Deus : четверг, 5 июнь, 1980
7. Dia de Portugal : вторник, 10 июнь, 1980
8. Assunção de Nossa Senhora : пятница, 15 август, 1980
9. Restauração da Independência : понедельник, 1 декабрь, 1980
10. Dia da Imaculada Conceição : понедельник, 8 декабрь, 1980
11. Natal : четверг, 25 декабрь, 1980
And here are the 3 public holidays falling on a weekend:
1. Páscoa : воскресенье, 6 апрель, 1980
2. Implantação da República : воскресенье, 5 октябрь, 1980
3. Todos os Santos : суббота, 1 ноябрь, 1980