In 2009, if you're due on December 4th, I think that means that you conceived on March 17th. But remember that people count two weeks ahead - when you conceived, you were already two weeks along, according to conventional counting.
march 21
in march
April
1st December
March 1, perhaps.
around march 21st
The begining of March ( first week)
Roughly Friday December 19th 2008
Roughly Friday December 25th 2009
Based on a normal gestation period of 40 weeks the conception date was December 31st.
December 24th give or take a couple of days.
December 2nd 2009? Yes, it's possible