Define a period

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How many working days in year 2051?

Here is the detail of the calculation:

Because 2051 is not a leap year, it has 365 days.

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

Now, let's remove 9 public holidays that do not fall during a weekend and we obtain 251 working days in 2051.

Here is the list of these 9 public holidays:

1. Skjærtorsdag : Thursday, 30 March, 2051
2. Langfredag : Friday, 31 March, 2051
3. Andre påskedag : Monday, 3 April, 2051
4. Første mai : Monday, 1 May, 2051
5. Kristi Himmelfartsdag : Thursday, 11 May, 2051
6. Grunnlovsdagen : Wednesday, 17 May, 2051
7. Andre pinsedag : Monday, 22 May, 2051
8. Første Juledag : Monday, 25 December, 2051
9. Andre Juledag : Tuesday, 26 December, 2051

And here are the 3 public holidays falling on a weekend:

1. Første nyttårsdag : Sunday, 1 January, 2051
2. Første påskedag : Sunday, 2 April, 2051
3. Første pinsedag : Sunday, 21 May, 2051