Define a period

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How many working days in year 1990?

Here is the detail of the calculation:

Because 1990 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 11 public holidays that do not fall during a weekend and we obtain 250 working days in 1990.

Here is the list of these 11 public holidays:

1. New Year's Day : Monday, 1 January, 1990
2. Day after New Year's Day : Tuesday, 2 January, 1990
3. Auckland Day : Monday, 29 January, 1990
4. Waitangi Day : Tuesday, 6 February, 1990
5. Good Friday : Friday, 13 April, 1990
6. Easter Monday : Monday, 16 April, 1990
7. Anzac Day : Wednesday, 25 April, 1990
8. Queen's Birthday : Monday, 4 June, 1990
9. Labour Day : Monday, 22 October, 1990
10. Christmas Day : Tuesday, 25 December, 1990
11. Boxing Day : Wednesday, 26 December, 1990