Here is a free moon sign calculator software based on Vedic Astrology. This calculator calculates your data and gives you your moon sign. Once you know your moon sign you can know about the characteristics and features in detail. The moon signs are different from the sun signs calculated in western astrology. This way you can understand your positive and negative traits, and thus improve your personality. Moon Signs or rashis play an important role in understanding an individual. It is also known as the Janma Rashi. It is described in terms of longitude of the position of the moon. Vedic astrology is based on sidereal astrology that assumes that the stars have a fixed position against which motion of planets is measured.