Define a period

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How many working days in year 1978?

Here is the detail of the calculation:

Because 1978 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 1978.

Here is the list of these 11 public holidays:

1. A doua zi după Anul Nou : Monday, 2 January, 1978
2. Ziua Unirii Principatelor Române : Tuesday, 24 January, 1978
3. Vinerea Mare : Friday, 28 April, 1978
4. A doua zi de Paște : Monday, 1 May, 1978
5. Ziua Copilului : Thursday, 1 June, 1978
6. A doua zi de Rusalii : Monday, 19 June, 1978
7. Adormirea Maicii Domnului : Tuesday, 15 August, 1978
8. Sfântul Andrei : Thursday, 30 November, 1978
9. Ziua Națională a României : Friday, 1 December, 1978
10. Crăciunul : Monday, 25 December, 1978
11. A doua zi de Crăciun : Tuesday, 26 December, 1978

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

1. Anul Nou : Sunday, 1 January, 1978
2. Paște ortodox : Sunday, 30 April, 1978
3. Rusalii : Sunday, 18 June, 1978