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 first dvādaśāṁśa of Aries is mapped into Aries and is lorded by Mars the lord of Aries or the first dvādaśāṁśa of Leo is mapped into Leo and is lorded by the Sun, lord of Leo. The second dvādaśāṁśa (2°30’ – 5°00’) of every sign is mapped into the second sign from it. For example, the second dvādaśāṁśa of Aries is mapped into Taurus which is the second sign from Aries. Thus, a planet placed at 3°15’ Aries will be in the second dvādaśāṁśa (i.e. within the range of 2°30’ to 5°00’) and will be placed in Taurus in the dvādaśāṁśa chart (D12 chart).
Dvādaśāṁśa Chart
A chart drawn with all the nine planets, lagna (and special ascendants etc) mapped into their dvādaśāṁśa signs is called the dvādaśāṁśa chart and is denoted as the D12 chart.
| Dvādaśāṁśa | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| Aries | Ar | Ta | Ge | Cn | Le | Vi | Li | Sc | Sg | Cp | Aq | Pi |
| Taurus | Ta | Ge | Cn | Le | Vi | Li | Sc | Sg | Cp | Aq | Pi | Ar |
| Gemini | Ge | Cn | Le | Vi | Li | Sc | Sg | Cp | Aq | Pi | Ar | Ta |
| Cancer | Cn | Le | Vi | Li | Sc | Sg | Cp | Aq | Pi | Ar | Ta | Ge |
| Leo | Le | Vi | Li | Sc | Sg | Cp | Aq | Pi | Ar | Ta | Ge | Cn |
| Virgo | Vi | Li | Sc | Sg | Cp | Aq | Pi | Ar | Ta | Ge | Cn | Le |
| Libra | Li | Sc | Sg | Cp | Aq | Pi | Ar | Ta | Ge | Cn | Le | Vi |
| Scorpio | Sc | Sg | Cp | Aq | Pi | Ar | Ta | Ge | Cn | Le | Vi | Li |
| Sagittarius | Sg | Cp | Aq | Pi | Ar | Ta | Ge | Cn | Le | Vi | Li | Sc |
| Capricorn | Cp | Aq | Pi | Ar | Ta | Ge | Cn | Le | Vi | Li | Sc | Sg |
| Aquarius | Aq | Pi | Ar | Ta | Ge | Cn | Le | Vi | Li | Sc | Sg | Cp |
| Pisces | Pi | Ar | Ta | Ge | Cn | Le | Vi | Li | Sc | Sg | Cp | Aq |
Use of dvādaśāṁśa and significators
Parāśara advises that the dvādaśāṁśa should be examined for elders (including parents and grandparents). The first focus is on Parents – biological father and mother and then on step parents like step father(s) or step mother(s). Thereafter we shall study both patrilineal and matrilineal grandparents.
Father and mother significators
Sun and Venus are the fixed significators (sthira kāraka) for father and are studied for the health and longevity of father. Moon and Mars are the fixed significators for mother and are studied for the health and longevity of mother.
In addition, Sun is the natural significator of father (as the giver of dharma) and Moon is the natural significator of mother (as she creates the body). A severely afflicted Moon in the rāśi chart can show mental suffering on account of a curse of mother from a previous incarnation and in this life there can be considerable suffering on account of mother. The lord of the fourth house from the Moon and the ninth house from the Sun brings ones mother and father respectively.
The fourth house from the dvādaśāṁśa lagna is treated as the lagna of mother and the ninth house is treated as the lagna of father.
Step parents
Relationship with parents is dependant on the time of birth. If birth is during the day (i.e. between sunrise and sunset) then the Sun is the significator of father and Venus is the significators of mother whole the Moon and Saturn are the significators of aunt and uncle. In the case of night birth, Moon and Saturn are the significators of mother and father while Venus and Sun show aunt and uncle respectively. In the case of death of a parent or separation between parents the significators of uncle and aunt will be the significators of the step parents.
Grandparents
Grandparents are also seen in the dvādaśāṁśa chart. Treating the ninth house and the constant significator (generally Sun) of father as the ascendant, the ninth thereof is the paternal grandfather and fourth from it is the paternal grandmother. Thus the fifth house being the ninth (father) from the ninth house (father) is treated as the ascendant of paternal grandfather and twelfth house being the fourth (mother) from the ninth house (father) is treated as the ascendant of paternal grandmother. Similarly the fourth house or the constant significator of mother (generally Moon) is treated as the ascendant of mother to determine the maternal grandparents. The seventh house being the fourth (mother) from the fourth house (mother) is treated as the ascendant of the maternal grandmother and the twelfth house being the ninth (father) from the fourth house (mother) is treated as the ascendant of the maternal grandfather.
Jupiter is the natural significator of paternal grandparents whereas Venus is the natural significator of maternal grandparents. Thus, in the dvādaśāṁśa chart, the 5th house from Jupiter is seen for relationship with paternal grandfather and the 12th house from Jupiter brings one closer to paternal grandmother. Similarly the 7th house from Venus brings one close to the maternal grandmother and twelfth house from Venus shows the affection with maternal grandfather.
Summary
The following houses emerge as the ascendants of parents and grandparents –
- 4th house: Mother
- 9th house: Father
- 5th house: Paternal grandfather
- 12th house: paternal grandmother and maternal grandfather
- 7th house: maternal grandmother
All readings can be made from the position of planets from these houses. For example, the sixth house being the tenth from the ninth house shows the vocation of father while the fourth lord in the ninth house shows a mother diligently following the father in this life and a happy home on this account at least. The āruḍha of the fourth and ninth houses in the dvādaśāṁśa chart are examined to see details about the parents’ families whereas the āruḍha in the rāśi chart are used for various general purposes. For example, the āruḍha of the fourth house (sukha pada or A4) in the rāśi chart shows the influences at home and a strong Venus influence shows that the mother’s family is strong and wealthy and has a stronger say than the fathers family. On the other hand a strong Jupiter influence shows a very influential fathers family having a stronger say on home affairs.
