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How many working days in year 2010?
Here is the detail of the calculation:
Because 2010 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 7 public holidays that do not fall during a weekend and we obtain 254 working days in 2010.
 Here is the list of these 7 public holidays: 
 
 1. New Year's Day : Friday, 1 January, 2010 
2. Good Friday : Friday, 2 April, 2010 
3. Easter Monday : Monday, 5 April, 2010 
4. Queen's Day : Friday, 30 April, 2010 
5. Liberation Day : Wednesday, 5 May, 2010 
6. Ascension Day : Thursday, 13 May, 2010 
7. Pentecost Monday : Monday, 24 May, 2010 
And here are the 4 public holidays falling on a weekend:
1. Easter Sunday : Sunday, 4 April, 2010 
2. Pentecost Sunday : Sunday, 23 May, 2010 
3. Christmas Day : Saturday, 25 December, 2010 
4. Boxing Day : Sunday, 26 December, 2010