What else would you expect? Sperm can live inside a woman's womb for a week waiting for the egg, so even if you knew the exact dates and times your parents were calling the stork you wouldn't be able to calculate the date of conception.
Then again, for this kind of amusement it's accurate enough. Aren't top ten songs charted by a weekly basis, movies maybe even more seldom?
It's also accurate enough for medical purposes, i.e. to find out when the baby should be viable without an incubator or such.
The purpose of the thread was to find the most popular song at particular dates. One of the dates was the date of conception. It is silly, given the inaccuracy of the date as you so adamantly reveal. So, rather than try and school me on biology just accept that is a dumb thing to try and figure out. Date of birth, sure. Date of conception, stupid...if you are trying to figure out which song was #1 on that date. Clear now?
