In constellations or Taramandal, there are twelve sectors of the ecliptic, the great circle. These sectors are known as Rashi or Zodiac. Each Rashi is associated with a sign. These twelve Rashi are Mesha, Vrishabha, Mithuna, Karka, Simha, Kanya, Tula, Vrishchika, Dhanu, Makara, Kumbha and Meena.
In Hindu culture first letter of names are decided according to Rashi and Nakshatra at the time of birth. Hence, names of most people are directly associated to Rashi. If your birth date and time is not known you can choose your Rashi according to your name. If you know your birth date and time then you can find your Rashi with Find Rashi With Birth Time.
In Vedic astrology Chandra Rashi or Moonsign is most prominent. Chandra Rashi, commonly called as Rashi, is given more importance than Sunsign and Birthstar. In Hindu culture first letter of names are decided according to Rashi and Nakshatra.