Dwadashamsa (D12 chart)
The Dwadashamsa (D12) divides each sign into twelve parts of 2°30′. It is the divisional chart for parents, ancestry and the inheritance, in every sense, that comes through your family.
Also known as: dwadasamsa, dwadashamsha, dvadasamsa, dwadasamsa chart, d12 kundli
The twelve parts of each sign are counted from the sign itself, so the D12 runs through the whole zodiac within every sign. Parashara reads the parents from this chart, and astrologers usually judge the mother through its 4th house and the Moon, and the father through its 9th house and the Sun.
The D12 helps describe your relationship with each parent, their fortunes, the traditions of your family and the patterns passed down the generations. It is read with the 4th and 9th houses of the Rashi chart.
Its ascendant changes roughly every 7–12 minutes, so a precise birth time matters. As with every varga, the D12 refines the Rashi chart; it does not overrule it.