Define a period

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How many working days in year 1986?

Here is the detail of the calculation:

Because 1986 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 1986.

Here is the list of these 9 public holidays:

1. Újév : Wednesday, 1 January, 1986
2. Nagypéntek : Friday, 28 March, 1986
3. Húsvét hétfő : Monday, 31 March, 1986
4. A munka ünnepe : Thursday, 1 May, 1986
5. Pünkösd hétfő : Monday, 19 May, 1986
6. Az államalapítás ünnepe : Wednesday, 20 August, 1986
7. Nemzeti ünnep : Thursday, 23 October, 1986
8. Karácsony : Thursday, 25 December, 1986
9. Karácsony másnapja : Friday, 26 December, 1986

And here are the 4 public holidays falling on a weekend:

1. Nemzeti ünnep : Saturday, 15 March, 1986
2. Húsvét vasárnap : Sunday, 30 March, 1986
3. Pünkösd vasárnap : Sunday, 18 May, 1986
4. Mindenszentek : Saturday, 1 November, 1986