Define a period

...

How many working days in year 2113?

Here is the detail of the calculation:

Because 2113 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 2113.

Here is the list of these 11 public holidays:

1. New Year's Day Observance : Monday, 2 January, 2113
2. Australia Day : Thursday, 26 January, 2113
3. Canberra Day : Monday, 13 March, 2113
4. Good Friday : Friday, 31 March, 2113
5. Easter Monday : Monday, 3 April, 2113
6. Anzac Day : Tuesday, 25 April, 2113
7. Reconciliation Day : Monday, 29 May, 2113
8. King's Birthday : Monday, 12 June, 2113
9. Labour Day : Monday, 2 October, 2113
10. Christmas Day : Monday, 25 December, 2113
11. Boxing Day : Tuesday, 26 December, 2113

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

1. New Year's Day : Sunday, 1 January, 2113
2. Easter Saturday : Saturday, 1 April, 2113
3. Easter Sunday : Sunday, 2 April, 2113