Define a period

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How many working days in year 2079?

Here is the detail of the calculation:

Because 2079 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 11 public holidays that do not fall during a weekend and we obtain 249 working days in 2079.

Here is the list of these 11 public holidays:

1. Day after New Year's Day : Monday, 2 January, 2079
2. New Year's Day Observance : Tuesday, 3 January, 2079
3. Auckland Day : Monday, 30 January, 2079
4. Waitangi Day : Monday, 6 February, 2079
5. Good Friday : Friday, 21 April, 2079
6. Easter Monday : Monday, 24 April, 2079
7. Anzac Day : Tuesday, 25 April, 2079
8. Queen's Birthday : Monday, 5 June, 2079
9. Labour Day : Monday, 23 October, 2079
10. Christmas Day : Monday, 25 December, 2079
11. Boxing Day : Tuesday, 26 December, 2079

And here is the public holiday falling on a weekend:

1. New Year's Day : Sunday, 1 January, 2079