Define a period

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How many working days in year 2004?

Here is the detail of the calculation:

Because 2004 is a leap year, it has 366 days.

Let's remove 52 saturdays and 52 sundays. It remains 262 days.

Now, let's remove 11 public holidays that do not fall during a weekend and we obtain 251 working days in 2004.

Here is the list of these 11 public holidays:

1. New Year's Day : Thursday, 1 January, 2004
2. Day after New Year's Day : Friday, 2 January, 2004
3. Auckland Day : Monday, 26 January, 2004
4. Waitangi Day : Friday, 6 February, 2004
5. Good Friday : Friday, 9 April, 2004
6. Easter Monday : Monday, 12 April, 2004
7. Anzac Day Observance : Monday, 26 April, 2004
8. Queen's Birthday : Monday, 7 June, 2004
9. Labour Day : Monday, 25 October, 2004
10. Christmas Day Observance : Monday, 27 December, 2004
11. Boxing Day Observance : Tuesday, 28 December, 2004

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

1. Anzac Day : Sunday, 25 April, 2004
2. Christmas Day : Saturday, 25 December, 2004
3. Boxing Day : Sunday, 26 December, 2004