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What is the D12 chart?

Dvādaśāṁśa divides each sign into twelve portions. Its traditional subject is parents and family life. Read D12 alongside the birth chart; its symbolism does not establish factual ancestry or a person's family history.

Twelve portions of 2°30′.

11° AriesStarts from Aries
11° Aries maps to Leo in D12

Aries, 11 degrees. Forward Dvādaśāṁśa. Count forward from the original sign through twelve equal 2-degree-30-minute portions. Eleven degrees lies in portion five, from 10 degrees to below 12 degrees 30 minutes. The inset enlarges portions four to six. In order, the 12 portions map to Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces. Portion 5 contains the example and maps to Leo.

0°Aries · 30°
  1. Portion 4Cancer7°30′–10°
  2. Portion 5Leo10°–12°30′
  3. Portion 6Virgo12°30′–15°

11° Aries → Leo

Portion 5 · D12

11° TaurusStarts from Taurus
11° Taurus maps to Virgo in D12

Taurus, 11 degrees. Forward Dvādaśāṁśa. Count forward from the original sign through twelve equal 2-degree-30-minute portions. Eleven degrees lies in portion five, from 10 degrees to below 12 degrees 30 minutes. The inset enlarges portions four to six. In order, the 12 portions map to Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius, Pisces, Aries. Portion 5 contains the example and maps to Virgo.

0°Taurus · 30°
  1. Portion 4Leo7°30′–10°
  2. Portion 5Virgo10°–12°30′
  3. Portion 6Libra12°30′–15°

11° Taurus → Virgo

Portion 5 · D12

Fifth portion · 10°–12°30′

Calculation examples

How is the D12 chart calculated?

Each 30° sign is divided into twelve portions of 2°30′. Counting begins from the original sign and moves forward through the zodiac.

The first portion of Aries maps to Aries, the second to Taurus, and so on. Taurus begins its sequence from Taurus. A position at 11° lies in the fifth portion, making 11° Aries Leo in D12 and 11° Taurus Virgo.

The width follows directly from 30° divided by twelve. The calculation diagram shows the sign assignment rather than a full family horoscope.

A parent showing an adult child how to care for a woven textile

Parents and family relationships

The classical association with parents gives D12 a focused role in a family reading. It concerns the parental relationship as interpreted through the chart, not a literal record of a family tree.

Care, upbringing and the ways a household passes on its customs provide a human setting for that theme. These experiences vary widely, and a chart does not define what any family must look like.

An astrologer and an older visitor studying manuscripts together

Reading D12 alongside D1

Begin with the parental questions and relevant planets in D1. Compare their positions with the D12 ascendant, its ruler and the relationships among planets in the divisional chart.

Look for patterns across the charts and use a reliable birth time. Avoid assigning a fixed character or destiny to a parent from one placement.

These are traditional interpretations, not verified statements about another person’s life or a substitute for knowing their circumstances.

Explore your D12 chart

D12 Dvādaśāṁśa chart in Mạghā Astro AI, using Nila Raman’s birth chart

Open your birth chart in Mạghā Astro AI and select D12 to explore your Dvādaśāṁśa placements.

Explore your D12 chart