Define a period

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How many working days in year 1983?

Here is the detail of the calculation:

Because 1983 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 1983.

Here is the list of these 9 public holidays:

1. Ziua Unirii Principatelor Române : Monday, 24 January, 1983
2. Vinerea Mare : Friday, 6 May, 1983
3. A doua zi de Paște : Monday, 9 May, 1983
4. Ziua Copilului : Wednesday, 1 June, 1983
5. A doua zi de Rusalii : Monday, 27 June, 1983
6. Adormirea Maicii Domnului : Monday, 15 August, 1983
7. Sfântul Andrei : Wednesday, 30 November, 1983
8. Ziua Națională a României : Thursday, 1 December, 1983
9. A doua zi de Crăciun : Monday, 26 December, 1983

And here are the 6 public holidays falling on a weekend:

1. Anul Nou : Saturday, 1 January, 1983
2. A doua zi după Anul Nou : Sunday, 2 January, 1983
3. Ziua Muncii : Sunday, 1 May, 1983
4. Paște ortodox : Sunday, 8 May, 1983
5. Rusalii : Sunday, 26 June, 1983
6. Crăciunul : Sunday, 25 December, 1983