Define a period

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How many working days in year 2012?

Here is the detail of the calculation:

Because 2012 is a leap year, it has 366 days.

Let's remove 52 saturdays and 53 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 2012.

Here is the list of these 11 public holidays:

1. Day after New Year's Day : Monday, 2 January, 2012
2. New Year's Day Observance : Tuesday, 3 January, 2012
3. Auckland Day : Monday, 30 January, 2012
4. Waitangi Day : Monday, 6 February, 2012
5. Good Friday : Friday, 6 April, 2012
6. Easter Monday : Monday, 9 April, 2012
7. Anzac Day : Wednesday, 25 April, 2012
8. Queen's Birthday : Monday, 4 June, 2012
9. Labour Day : Monday, 22 October, 2012
10. Christmas Day : Tuesday, 25 December, 2012
11. Boxing Day : Wednesday, 26 December, 2012

And here is the public holiday falling on a weekend:

1. New Year's Day : Sunday, 1 January, 2012