Define a period

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How many working days in year 2013?

Here is the detail of the calculation:

Because 2013 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 2013.

Here is the list of these 11 public holidays:

1. New Year's Day : Tuesday, 1 January, 2013
2. Australia Day Observance : Monday, 28 January, 2013
3. Canberra Day : Monday, 11 March, 2013
4. Good Friday : Friday, 29 March, 2013
5. Easter Monday : Monday, 1 April, 2013
6. Anzac Day : Thursday, 25 April, 2013
7. King's Birthday : Monday, 10 June, 2013
8. Family & Community Day : Monday, 30 September, 2013
9. Labour Day : Monday, 7 October, 2013
10. Christmas Day : Wednesday, 25 December, 2013
11. Boxing Day : Thursday, 26 December, 2013

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

1. Australia Day : Saturday, 26 January, 2013
2. Easter Saturday : Saturday, 30 March, 2013
3. Easter Sunday : Sunday, 31 March, 2013