Define a period

...

How many working days in year 1959?

Here is the detail of the calculation:

Because 1959 is not a leap year, it has 365 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 252 working days in 1959.

Here is the list of these 9 public holidays:

1. Anul Nou : Thursday, 1 January, 1959
2. A doua zi după Anul Nou : Friday, 2 January, 1959
3. Vinerea Mare : Friday, 1 May, 1959
4. A doua zi de Paște : Monday, 4 May, 1959
5. Ziua Copilului : Monday, 1 June, 1959
6. A doua zi de Rusalii : Monday, 22 June, 1959
7. Sfântul Andrei : Monday, 30 November, 1959
8. Ziua Națională a României : Tuesday, 1 December, 1959
9. Crăciunul : Friday, 25 December, 1959

And here are the 5 public holidays falling on a weekend:

1. Ziua Unirii Principatelor Române : Saturday, 24 January, 1959
2. Paște ortodox : Sunday, 3 May, 1959
3. Rusalii : Sunday, 21 June, 1959
4. Adormirea Maicii Domnului : Saturday, 15 August, 1959
5. A doua zi de Crăciun : Saturday, 26 December, 1959