Oh there is more to the subject than my condescending dismissive last post, but it is definitely all hogwash. Of all the factors which could influence one's 'personality' (a fluid concept throughout one's life anyway), which day of the year and the positional state of celestial bodies are not amongst them.
If astrology did have any reality behind it, it would be as accepted as a mainstream branch of science. The whole idea of astrology is that you can measure and predict, which would be great if the measurements and predictions weren't just made up.
Where is the purpose in listing character traits for people born in a certain month, when the eligible population will have a hit rate of anything between 0% and 100% - what on earth is that supposed to prove?