Wouldn't astrology matter more based on conception?

You're trying to apply logic to something hopelessly illogical.

Hmm most people have no idea when they were conceived. Even if you just went back nine months chances are its not the right date. I don't take this stuff too seriously but its interestingly accurate. Coincidence I'm sure but still. It describes me pretty damn well. My birthday and element stuff and whatnot. I have a book ok man.

Why are you trying to rational something you believe to be irrational?

Google says that astrology is "the study of the movements and relative positions of celestial bodies interpreted as having an influence on human affairs."

So I guess it depends on when you consider somebody to be "human".

As myownopinions said, Astrology is the study of astronomical movements' effects and influence on human affairs. It would all depend on your personal opinion of when humanity begins and what a human is.

So if you believe that an embryo is a human, then yes, the date of conception would technically be the date that matters as it is the date at which said person can into existence. However, if you believe that a human doesn't become a human until they can survive outside of the womb (which, according to most doctors, assuming that the baby developed properly beforehand, is 24 weeks), then your view would be a bit different.

By that definition of humanity, a fetus would count as a human being, medically, at 24 weeks if that is your criteria, so the date one would use for their astrological chart would be the day at which they turned 24 weeks (which is an estimate, but usually a very accurate one).

However, if your definition of a human being is a baby that has been born alive and conscious, then the astrological date you'd use will be the birth date.

That said, we return to the original point that it depends on your opinion of what is a human being. Seeing as how we as a society, both scientifically and otherwise, have yet to agree on when one would become a human, all of your astrological assumptions will be based on your opinion of when one becomes a human.

I expanded on this way too much.

Astrology isn't real though

lol you may as well consider the date in which the mother's eggs were produced and the father's sperm

Gulargambone!

I don't know about all this, but I find that my sign, Taurus, really matches me. ^_^

But wait a second, most people are born on time - give or take a week - so that shouldn't really affect what sign you are...

Not that I believe in this crap anyway though.

Reputable astrologers always ask if people were full-term babies, born early, or whatever.

No one can be sure of his conception date.

interesting , that would mean my conception date would be may 29 gemini, the twins