Определить период

...

How many working days in year 2140?

Here is the detail of the calculation:

Because 2140 is a leap year, it has 366 days.

Let's remove 53 saturdays and 52 sundays. It remains 261 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2140.

Here is the list of these 11 public holidays:

1. Confraternização Universal : пятница, 1 январь, 2140
2. Terça-feira de Carnaval : вторник, 16 февраль, 2140
3. Sexta Feira Santa ou Paixão de Cristo : пятница, 1 апрель, 2140
4. Tiradentes : четверг, 21 апрель, 2140
5. Corpus Christi : четверг, 2 июнь, 2140
6. Adesão do Maranhão à independência do Brasil : четверг, 28 июль, 2140
7. Independência do Brasil : среда, 7 сентябрь, 2140
8. Nossa Senhora Aparecida : среда, 12 октябрь, 2140
9. Finados : среда, 2 ноябрь, 2140
10. Proclamação da República Brasileira : вторник, 15 ноябрь, 2140
11. Dia de Nossa Senhora da Conceição : четверг, 8 декабрь, 2140

And here are the 3 public holidays falling on a weekend:

1. Dia do Trabalho : воскресенье, 1 май, 2140
2. Dia Nacional de Zumbi e da Consciência Negra : воскресенье, 20 ноябрь, 2140
3. Natal : воскресенье, 25 декабрь, 2140