Dwadasama

In astrology, a dwadasama, which is also called a dwad, duad or dwadachamsha, is 1/12 of a zodiacal sign. The dwadasama was developed by Hindu astrologers who broke the 30 degree sign down into 12 equal parts of 2.5 degrees each. It is based upon the principle of the part being a reflection of the whole, and 12 signs of the zodiac were placed with
Found on http://en.wikipedia.org/wiki/Dwadasama
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