Star signs are constellations. They’re assigning personality traits and events to astronomical phenomena and trying to predict the future based on past occurrences. Based on the idea the planet circles 360 degrees around the sun and there are 12 star signs. So each star sign has 30 degrees. From my recent understanding Vedic astrology calculates it from exactly the time and place you were born. While the other astrology system uses calculations from a specific time and from the equatorial position of the constellations. From the time the western astrology was codified the cycle through the constellations or star signs is off by as much as 24 degrees. Hence why you can be a different sign in Vedic astrology vs western astrology.

I hope that explains things. Anyone correct me if I’m wrong. I’m very confused by astrology.