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How many working days in year 2012?
Here is the detail of the calculation:
Because 2012 is a leap year, it has 366 days.
Let's remove 52 saturdays and 53 sundays. It remains 261 days.
Now, let's remove 8 public holidays that do not fall during a weekend and we obtain 253 working days in 2012.
 Here is the list of these 8 public holidays: 
 
 1. National Sovereignty and Children's Day : Monday, 23 April, 2012 
2. Labour and Solidarity Day : Tuesday, 1 May, 2012 
3. Ramadan Feast (Eid al-Fitr) : Monday, 20 August, 2012 
4. Ramadan Feast (Eid al-Fitr) : Tuesday, 21 August, 2012 
5. Victory Day : Thursday, 30 August, 2012 
6. Sacrifice Feast (Eid al-Adha) : Thursday, 25 October, 2012 
7. Sacrifice Feast (Eid al-Adha) : Friday, 26 October, 2012 
8. Republic Day : Monday, 29 October, 2012 
And here are the 5 public holidays falling on a weekend:
1. New Year's Day : Sunday, 1 January, 2012 
2. Commemoration of Atatürk, Youth and Sports Day : Saturday, 19 May, 2012 
3. Ramadan Feast (Eid al-Fitr) : Sunday, 19 August, 2012 
4. Sacrifice Feast (Eid al-Adha) : Saturday, 27 October, 2012 
5. Republic Day Eve : Sunday, 28 October, 2012