I doubt that would do much to make believers out of nonbelievers. Highly unlikely. Especially if there mind is already set. Like trying to make believers out of atheists. They will argue tooth and nail or ignore you all together.
I also highly doubt people will provide you with such personal information to some random stranger on the net just cause you feel the need to prove something to them. Well, they may provide you with a date, time, and location but it won't be theirs.
That being said. I'm quite neutral about astrology. I enjoy the topic. When there is a discussion or argument, for or against, i can understand both points of view. Lately i've approach astrology with skepticism but leaning towards it. Somethings i've found quite accurate.