Define a period

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How many working days in year 1983?

Here is the detail of the calculation:

Because 1983 is not a leap year, it has 365 days.

Let's remove 53 saturdays and 52 sundays. It remains 260 days.

Now, let's remove 7 public holidays that do not fall during a weekend and we obtain 253 working days in 1983.

Here is the list of these 7 public holidays:

1. Skærtorsdag : Thursday, 31 March, 1983
2. Langfredag : Friday, 1 April, 1983
3. 2. påskedag : Monday, 4 April, 1983
4. Store Bededag : Friday, 29 April, 1983
5. Kristi Himmelfartsdag : Thursday, 12 May, 1983
6. 2. pinsedag : Monday, 23 May, 1983
7. 2. juledag : Monday, 26 December, 1983

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

1. Nytårsdag : Saturday, 1 January, 1983
2. Påskedag : Sunday, 3 April, 1983
3. Pinsedag : Sunday, 22 May, 1983
4. Juledag : Sunday, 25 December, 1983