Questions about “cusps” and birth signs
[A portion of this article is taken from earlier posts.] The idea that a person was born on the “cusp” originates from Sun Sign astrology. Your sign as you know it is actually the sign that the Sun was in at the time you were born. If you pick up a book or newspaper horoscope about your Sun sign, or as some publications call it, your star sign (if you see a publication that refers to star signs, run as fast as you can in the opposite direction), […]

The signs of the zodiac change every 30 days, and there is a brief period while the Sun passes from one sign to another that is known as the “cusp.” Some people believe that individuals born several days before or after this time possess aspects of both signs, but in actual fact a planet is either one sign