Define a period

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How many working days in year 2016?

Here is the detail of the calculation:

Because 2016 is a leap year, it has 366 days.

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

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 250 working days in 2016.

Here is the list of these 11 public holidays:

1. New Year's Day : Friday, 1 January, 2016
2. Day after New Year's Day Observance : Monday, 4 January, 2016
3. Auckland Day : Monday, 1 February, 2016
4. Waitangi Day Observance : Monday, 8 February, 2016
5. Good Friday : Friday, 25 March, 2016
6. Easter Monday : Monday, 28 March, 2016
7. Anzac Day : Monday, 25 April, 2016
8. Queen's Birthday : Monday, 6 June, 2016
9. Labour Day : Monday, 24 October, 2016
10. Boxing Day : Monday, 26 December, 2016
11. Christmas Day Observance : Tuesday, 27 December, 2016

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

1. Day after New Year's Day : Saturday, 2 January, 2016
2. Waitangi Day : Saturday, 6 February, 2016
3. Christmas Day : Sunday, 25 December, 2016