A Varga is a divisional chart: a rule-based rearrangement of the planetary longitudes already used in a birth chart. D-1 is the main sign chart; D-9, D-10 and other labels identify different division schemes. A divisional chart adds a traditional interpretive framework, not new astronomical observations or independent proof about a person.
What is divided?
Take a planet’s degree within its 30° sign. Divide that interval according to the chosen Varga, identify the segment and apply its sign-assignment rule. Equal segment width does not mean every Varga starts counting from the same sign. Some other Vargas also use unequal divisions; do not assume a single multiplication formula implements the entire system.
Four charts compared
- D-9 Navamsa — Equal segment width: 3°20′; Traditional topic: Partnership, dharma, dignity
- D-10 Dashamsa — Equal segment width: 3°; Traditional topic: Professional roles
- D-7 Saptamsa — Equal segment width: 30° ÷ 7; Traditional topic: Children and family continuity
- D-20 Vimshamsa — Equal segment width: 1°30′; Traditional topic: Devotional practice
These topic labels describe astrological usage. They do not establish marriage quality, employment, fertility or spiritual merit.
One longitude, two different outputs
Use an invented planet at 12° Aries. In D-9 it occupies the fourth segment and maps to Cancer. In D-10 it is exactly at the start of the fifth segment and maps to Leo. Both follow their own arithmetic; neither result is a competing measurement of where the planet physically sits. Its original longitude remains 12° Aries.
The D-10 example also shows why boundaries matter. Just below 12°, the segment is the fourth; at 12° it is the fifth. Do not round the longitude first and then claim certainty about the derived placement. A sign result alone also does not give a house without the divisional ascendant.
How to compare without overclaiming
Start with one question and the relevant chart rather than searching many divisions until one produces the desired answer. Record the D-1 placement, Varga placement, calculation convention and uncertainties. If two interpretations conflict, report the conflict; do not describe one as the planet’s “true” nature merely because it supports a preferred story.
For an uncertain birth time, compare both ends of the plausible interval. Mark which ascendant and planet placements remain stable. The repeated use of the same birth data means apparent agreement between divisions is not independent corroboration of a prediction.
Sources and a useful next step
Brihat Parashara Hora Shastra, chapters 6–7 provide a textual starting point for the divisions and their traditional consideration. Editions and schools differ in application. Our numerical example is an original teaching exercise; it does not reproduce promised life outcomes. Continue with the reading worksheet and keep consequential decisions grounded in real circumstances.