I have never put stock in them, however - I could see that people born around the same time could tend to have some of the same characteristics. Maybe it's the effects of seasonality in utero (and triggering certain epigenetic changes), or hitting developmental phases in winter vs. summer or something like that. Not going to be as applicable in first world countries though. I know there are some interesting studies on third world countries about babies born in the rainy season vs. dry related to their livability and morbidity due to the mom having been pregnant during a time of plentiful or scarce food. I believe it was also found that women pregnant in the aftermath of the Chilean earthquake several years ago were more likely to have girls as stress results in a higher female %. Survival of the species and all that.
How that relates to what the universe is going to deal them each day..........I'm dubious at best.
as for my actual sign - Gemini:
Strengths: Gentle, affectionate, curious, adaptable, ability to learn quickly and exchange ideas
Weaknesses: Nervous, inconsistent, indecisive
I would say that's fairly accurate. I'm notoriously indecisive about small decisions. Like others have pointed out though, I think these are wide-ranging enough to cover a lot of people. I flipped through a few of the other signs and I would say those could be decent characterizations of myself as well. So, I won't be planning my life around it
I had to laugh at my husband's (Taurus):
Strengths: Reliable, patient, practical, devoted, responsible, stable
Weaknesses: Stubborn, possessive, uncompromising
That is an undeniably accurate description of him.