Shodashvarga: all sixteen divisional charts, and what each is for

What a divisional chart really is

Every varga is the same arithmetic idea. Take the planet's longitude, cut the 30° sign into N parts, see which part the planet falls in, and map that part to a sign by the division's own rule. Nothing is observed twice. One set of longitudes produces all sixteen charts.

This is the honest framing, and it is also the useful one. A varga reads the same sky at higher resolution for a narrower question, which is why each is assigned a subject rather than used for everything.

Resolution and the birth time, which is the real limit

The arithmetic imposes a hard constraint that is usually glossed over. A D9 part is 3°20′ wide; a D60 part is 30 arcminutes — half a degree. The ascendant crosses half a degree in about two minutes.

So a D60 reading is only as good as a birth time recorded to the minute, and almost no birth time in India is. We compute the full Shodashvarga because the calculation is cheap and the finer charts are genuinely used for some questions, and we state the birth-time accuracy on the chart so that a reader can see how far down the set it is reasonable to go. A report that reads your D60 from a birth time you half-remember is reading arithmetic noise.

Which ones get used in practice

In ordinary practice, four carry most of the weight: the D1 for everything, the D9 for marriage and strength, the D10 for career, and the D12 for parents. The D7 is added for children, the D4 for property, the D30 for difficulties, the D60 by those who work with it and have the birth time to justify it.

A reading that quotes twelve divisional charts for one question is usually looking for one that agrees, which is the thing to watch for.

Common questions

How many divisional charts are there?

Shodashvarga is the standard set of sixteen. Other schemes count ten (Dashavarga) or seven (Saptavarga), and some authors use divisions outside any of these sets.

Which divisional chart matters most?

After the birth chart itself, the D9. It is read both for marriage and for a planet's underlying strength, and it is used in Jaimini for the Karakamsha. The D10 is next for career questions.

Do I need an exact birth time for divisional charts?

Increasingly, the finer the division. A D9 part is 3°20′; a D60 part is half a degree, which the ascendant crosses in about two minutes. Below the D9 or so, an approximate birth time stops being usable.

Is a divisional chart a different chart?

No. It is the same planetary longitudes re-read at a finer resolution. Nothing extra is observed, and nothing about the sky changes between D1 and D60.