Define a period

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How many working days in year 1985?

Here is the detail of the calculation:

Because 1985 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 8 public holidays that do not fall during a weekend and we obtain 253 working days in 1985.

Here is the list of these 8 public holidays:

1. Uudenvuodenpäivä : Tuesday, 1 January, 1985
2. Pitkäperjantai : Friday, 5 April, 1985
3. 2. pääsiäispäivä : Monday, 8 April, 1985
4. Vappu : Wednesday, 1 May, 1985
5. Helatorstai : Thursday, 16 May, 1985
6. Itsenäisyyspäivä : Friday, 6 December, 1985
7. Joulupäivä : Wednesday, 25 December, 1985
8. Tapaninpäivä : Thursday, 26 December, 1985

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

1. Loppiainen : Sunday, 6 January, 1985
2. Pääsiäispäivä : Sunday, 7 April, 1985
3. Helluntaipäivä : Sunday, 26 May, 1985
4. Juhannuspäivä : Saturday, 22 June, 1985
5. Pyhäinpäivä : Saturday, 2 November, 1985