Define a period

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How many working days in year 2000?

Here is the detail of the calculation:

Because 2000 is a leap year, it has 366 days.

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

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 252 working days in 2000.

Here is the list of these 8 public holidays:

1. Loppiainen : Thursday, 6 January, 2000
2. Pitkäperjantai : Friday, 21 April, 2000
3. 2. pääsiäispäivä : Monday, 24 April, 2000
4. Vappu : Monday, 1 May, 2000
5. Helatorstai : Thursday, 1 June, 2000
6. Itsenäisyyspäivä : Wednesday, 6 December, 2000
7. Joulupäivä : Monday, 25 December, 2000
8. Tapaninpäivä : Tuesday, 26 December, 2000

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

1. Uudenvuodenpäivä : Saturday, 1 January, 2000
2. Pääsiäispäivä : Sunday, 23 April, 2000
3. Helluntaipäivä : Sunday, 11 June, 2000
4. Juhannuspäivä : Saturday, 24 June, 2000
5. Pyhäinpäivä : Saturday, 4 November, 2000