August 16th 2009, give or take a few days. However, it is difficult to accurately say when a conception date is. Therefore, I suggest talking to your doctor, midwife or obstetrician about it.
December 10th 2010? That would make your conception date roughly March 18th
it would have been around January 10th, 2010.
That makes your conception date roughly October 10th 2010. However, this date could be wrong by a couple of days. It also depends on the length of your menstrual cycles.
go to babycenter.com and use the due date calculator
Roughly between Friday April 10th 2009 and Thursday April 16th 2009, give or take a few days
The approximate date of conception was October 24th
The approximate date of conception was June 13th
The approximate date of conception was August 25th
The approximate date of conception was August 28th
The approximate date of conception was June 17th
The approximate date of conception was September 29th
The approximate date of conception was May 31st