Define a period

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How many working days in year 1990?

Here is the detail of the calculation:

Because 1990 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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 1990.

Here is the list of these 11 public holidays:

1. Újév : Monday, 1 January, 1990
2. Nemzeti ünnep : Thursday, 15 March, 1990
3. Nagypéntek : Friday, 13 April, 1990
4. Húsvét hétfő : Monday, 16 April, 1990
5. A munka ünnepe : Tuesday, 1 May, 1990
6. Pünkösd hétfő : Monday, 4 June, 1990
7. Az államalapítás ünnepe : Monday, 20 August, 1990
8. Nemzeti ünnep : Tuesday, 23 October, 1990
9. Mindenszentek : Thursday, 1 November, 1990
10. Karácsony : Tuesday, 25 December, 1990
11. Karácsony másnapja : Wednesday, 26 December, 1990

And here are the 2 public holidays falling on a weekend:

1. Húsvét vasárnap : Sunday, 15 April, 1990
2. Pünkösd vasárnap : Sunday, 3 June, 1990