Define a period

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How many working days in year 1991?

Here is the detail of the calculation:

Because 1991 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 1991.

Here is the list of these 11 public holidays:

1. New Year's Day : Tuesday, 1 January, 1991
2. Day after New Year's Day : Wednesday, 2 January, 1991
3. Auckland Day : Monday, 28 January, 1991
4. Waitangi Day : Wednesday, 6 February, 1991
5. Good Friday : Friday, 29 March, 1991
6. Easter Monday : Monday, 1 April, 1991
7. Anzac Day : Thursday, 25 April, 1991
8. Queen's Birthday : Monday, 3 June, 1991
9. Labour Day : Monday, 28 October, 1991
10. Christmas Day : Wednesday, 25 December, 1991
11. Boxing Day : Thursday, 26 December, 1991