The Dvādaśāṁśa: D12 is one-twelfth part of a rāśi measuring 2°30′ arc. There are 144 Dvādaśāṁśa in the zodiac as 12×12=144. But unlike the horā D2 chart maps to the second house of the rāśi chart in the physical plane of consciousness, the Dvādaśāṁśa although a D12 chart, maps to two houses! – the fourth and ninth houses of parents. In addition it also maps to the 12th house to indicate father’s mother as well as mother’s father. it also maps to the 7th house to indicate mother’s mother.
In sanskrit, the number 12 is associated with the Sun due to the dvadasa aditya. Hence another name for Dvādaśāṁśa is Suryāṁśa

• Dvādaśāṁśa Concepts - Dvādaśāṁśa mapping The first dvādaśāṁśa of every sign which extends from 0°00’- 2°30’ of every sign, is mapped into the same sign. For example, the...
• Dvādaśāṁśa: Parents - Dvādaśāṁśa devatā Gaṇeśa, Dasra (Aśvinī Kumar), Yama and Ahi (Sarpa) repeating three times, in that order are the four devatā of the dvādaśāṁśa. Devatā Dvādaśāṁśa...
• D12: Grandparents -   Dvādaśāṁśa and Grandparents Grandparents, both maternal and paternal are examined from the dvādaśāṁśa. The paternal grandparents are seen from the 9th (father) and 4th...
• D12: Abuse - Child abuse by parents The planets signifying childhood are the Moon (Baby 0-1 year), Mars (1-4 years) and Mercury (4-12 years). Adolescence and youth are...
• D12 Dwadasamsa (2023) - Thus, a proper examination of the fourth house will require an in depth examination of a number of divisional charts. These include the Chaturthamsa (D-4)...