Define a period

...

How many working days in year 2040?

Here is the detail of the calculation:

Because 2040 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2040.

Here is the list of these 8 public holidays:

1. Loppiainen : Friday, 6 January, 2040
2. Pitkäperjantai : Friday, 30 March, 2040
3. 2. pääsiäispäivä : Monday, 2 April, 2040
4. Vappu : Tuesday, 1 May, 2040
5. Helatorstai : Thursday, 10 May, 2040
6. Itsenäisyyspäivä : Thursday, 6 December, 2040
7. Joulupäivä : Tuesday, 25 December, 2040
8. Tapaninpäivä : Wednesday, 26 December, 2040

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

1. Uudenvuodenpäivä : Sunday, 1 January, 2040
2. Pääsiäispäivä : Sunday, 1 April, 2040
3. Helluntaipäivä : Sunday, 20 May, 2040
4. Juhannuspäivä : Saturday, 23 June, 2040
5. Pyhäinpäivä : Saturday, 3 November, 2040