5 years locking period - How to calculate

Hi,

I prchased a house in August 2006 by home loan.Statrted taking tax benifit from FY 2006-2007. I come to know that if i sell it before 5 years , 80c rebate will be reverted.

Now my question is . How to calculate this 5 year period?

5 years will be completed in Aug 2011. So shall i sell it after aug 2011 or i need to wait until the end of financial year 2011-2012 i.e. until march 2012.

Please advise.

Thanks