Define a period

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How many working days in year 2057?

Here is the detail of the calculation:

Because 2057 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 2057.

Here is the list of these 8 public holidays:

1. Nieuwjaar : Monday, 1 January, 2057
2. Goede Vrijdag : Friday, 20 April, 2057
3. Tweede Paasdag : Monday, 23 April, 2057
4. Koningsdag : Friday, 27 April, 2057
5. Hemelvaartsdag : Thursday, 31 May, 2057
6. Tweede Pinksterdag : Monday, 11 June, 2057
7. Eerste Kerstdag : Tuesday, 25 December, 2057
8. Tweede Kerstdag : Wednesday, 26 December, 2057

And here are the 2 public holidays falling on a weekend:

1. Eerste Paasdag : Sunday, 22 April, 2057
2. Eerste Pinksterdag : Sunday, 10 June, 2057