While there is a smaller subculture of astrology that does embrace the 13th sign, the very structure of Western Tropical, and ...

The theory hinges on the idea that our view of the stars slowly drifts over time as the Earth wobbles, so the constellations ...

each a zodiac sign. However, constellations vary widely in size, and the sun spends more time in some constellations like Virgo than others such as Cancer. There's even a 13th constellation, Ophiuchus ...