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How many working days in year 2009?
Here is the detail of the calculation:
Because 2009 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 9 public holidays that do not fall during a weekend and we obtain 252 working days in 2009.
 Here is the list of these 9 public holidays: 
 
 1. New Year's Day : Thursday, 1 January, 2009 
2. Australia Day : Monday, 26 January, 2009 
3. Eight Hours Day : Monday, 9 March, 2009 
4. Good Friday : Friday, 10 April, 2009 
5. Easter Monday : Monday, 13 April, 2009 
6. Easter Tuesday : Tuesday, 14 April, 2009 
7. King's Birthday : Monday, 8 June, 2009 
8. Christmas Day : Friday, 25 December, 2009 
9. Boxing Day Observance : Monday, 28 December, 2009 
And here are the 2 public holidays falling on a weekend:
1. Anzac Day : Saturday, 25 April, 2009 
2. Boxing Day : Saturday, 26 December, 2009