Your ninth-division chart, computed from the Swiss Ephemeris on the arc-second — with the D9 ascendant shown only when your birth-time precision can support it.
The Navamsa divides each 30° sign into nine parts of 3°20′ each and re-maps every planet, and the ascendant, into a second zodiac. BPHS assigns it to the spouse; practitioner tradition reads it for marriage and dharma and uses it as a test of every planet's strength. After the rashi chart, it is the divisional chart practitioners read most often.
This calculator runs the same engine our signed-in charts run — Swiss Ephemeris with the Lahiri sidereal ayanamsha and the true lunar node — on raw longitudes in integer arc-seconds. It does not estimate or interpolate a position. If our ephemeris is unavailable, this page tells you so instead of drawing something plausible.
A public, widely-published moment, used here only to show the arithmetic on a chart anyone can check against any other software. Using a real person's birth details as a demo would be someone else's private data on a marketing page, so we don't. Nothing on this page is a statement about that moment or its consequences.
Indian independence — 15 August 1947, 00:00 IST, Delhi
This published moment is read as an exact time, which this site checks across ±5 minutes. Checked against your chart: because your birth time is treated as precise to ±5 min, the Navamsa (D9) ascendant could be 2 different signs. This is about how sensitive the calculation is to your birth time — nothing else.
| Planet | Rashi | D9 | Flags |
|---|---|---|---|
| sun | cancer | pisces 11°54′ | — |
| moon | cancer | leo 5°51′ | — |
| mercury | cancer | scorpio 3°04′ | — |
| venus | cancer | capricorn 23°03′ | — |
| mars | gemini | sagittarius 7°06′ | — |
| jupiter | libra | taurus 22°53′ | — |
| saturn | cancer | capricorn 4°15′ | — |
| rahu | taurus | aquarius 21°42′ | — |
| ketu | scorpio | leo 21°42′ | — |
Take a planet's sidereal longitude. Its position within its sign, 0° to 30°, is divided into nine equal parts of 3°20′. The part index — 0 through 8 — is counted forward from a starting sign fixed by the element of the D1 sign: fire signs start counting at Aries, earth at Capricorn, air at Libra, water at Cancer.
So a planet at 7°15′ of Taurus sits in the third navamsa part (7°15′ ÷ 3°20′ = 2.175, so index 2). Taurus is an earth sign, so counting starts at Capricorn: Capricorn + 2 = Pisces. That planet's D9 sign is Pisces. The same rule, unchanged, is applied to the ascendant to get the D9 lagna — which, as the section on birth time explains, needs a far more precise birth time than the planets do.
The arithmetic is exact and mechanical. Where implementations differ is upstream of it: the ayanamsha, the node, and whether the software keeps full precision or rounds to arc-minutes first. We keep the raw longitude and work in arc-seconds, because a 3°20′ division amplifies a rounding error nine-fold, and the higher divisions amplify it far more.
When a planet occupies the same sign in the D1 rashi chart and in the D9, it is called vargottama, 'best in division'. The traditional reading is that the planet's expression is unusually consistent: the same sign describes it at both levels of magnification, so there is no contradiction between the surface reading and the ninth-part reading.
The calculator flags vargottama placements automatically, for every planet whose D9 sign holds across your birth-time window. It is a computed fact about your chart, not an interpretation — what it means for you depends on the rest of the chart.
Brihat Parashara Hora Shastra assigns the Navamsa to: Spouse (kalatra). That is the classical attribution, and it is the one we cite.
Around it, practitioner tradition has built a much larger apparatus: spouse description from the seventh house of the D9, timing marriage from dashas read against D9 placements, atmakaraka-in-navamsa as a marker of the soul's direction. Some of this is centuries old and widely taught; none of it is in BPHS Chapter 7 in that form. We keep the two labelled separately everywhere on this site, because a reader deserves to know whether they are being told śāstra or practice.
One reading circulates widely online: that 'weak in D1, strong in D9' means a promise 'delivers after maturity'. We do not read it that way. In the reading this site uses, the D9 modifies what the D1 shows, and timing comes from the dasha system, never from a divisional chart alone.
The D9 ascendant moves through a full sign roughly every 13.3 minutes — a latitude-dependent average, not a fixed constant. Your rashi ascendant, by comparison, holds a sign for about two hours.
That is the whole reason this site badges divisional charts by birth-time precision. After we compute your chart, we recompute the real ascendant at the edges of the birth-time window you choose and count how many D9 signs it could occupy across it. One sign: we show it, with its houses. Two: we name both and draw no houses. More: we say how many and draw none, rather than printing the middle one as a fact.
The same check runs for every planet. The Moon moves about a degree every two hours, so near a 3°20′ edge even a precise time can leave it in two navamsas; when that happens we name both signs instead of drawing one.
This is a statement about how sensitive a calculation is to its input. It is not a claim about whether any reading is correct.
The grid is the South Indian sign-fixed form: the twelve signs sit in fixed cells, and the planets move between them. When a D9 lagna is available, the lagna cell is highlighted and whole-sign house numbers are counted from it. When it is withheld — because your birth-time precision cannot support it — the grid renders sign-fixed with no house numbers at all, rather than a house 1 we would have had to invent.
Below the grid, each planet your window fixes is listed with its D1 sign, its D9 sign and degree, and a vargottama flag where it applies. We do not print a dignity verdict on its own: whether a planet is strong or weak in the D9 depends on the rest of the chart, and a bare 'debilitated' is a verdict we will not issue without that context.
It is the ninth divisional chart: each sign is split into nine parts of 3°20′, and every planet plus the ascendant is re-mapped into a second zodiac according to which part it falls in. Classically it is read alongside the rashi chart, not instead of it.
Neither replaces the other. The rashi chart is the base; the navamsa is classically used to test the strength of what the rashi chart shows. A planet can look strong in D1 and weak in D9, and the classical position is that the D9 reading modifies the D1 one.
For most planets, no — they barely move in a few minutes, though the Moon can cross a navamsa edge within half an hour. For the D9 ascendant, yes: it changes sign roughly every 13.3 minutes on average. This calculator checks the ascendant and every planet across the birth-time window you choose and says what holds, rather than presenting one candidate as certain.
Then no divisional ascendant is meaningful — across a full day the ascendant passes through every sign — so this calculator asks for a time. The date alone does not fix every planet either: the Moon crosses about four navamsas in a day. A free account's chart page draws only the divisional placements your birth date does fix, and names the rest. We will not draw you a divisional lagna we cannot support, and the birth chart says plainly when its rising sign and houses rest on an assumed time.
A planet in the same sign in both the rashi chart and the navamsa. It is a computed flag, marked automatically here, traditionally read as a sign of consistency in how that planet expresses.
We won't make that claim. The classical position is that timing comes from the dasha system, with divisional charts describing the matter rather than dating it. Anyone promising you a wedding date from a D9 alone is selling certainty that the texts themselves do not offer.
Almost always the ayanamsha or the node. We use standard Lahiri (Chitrapaksha) and the true lunar node. Some software uses another ayanamsha, which shifts every longitude, or the mean node, and the true and mean nodes are about a degree apart — a median of 1°03′ and up to 1°59′ between 1900 and 2025 — enough to put Rahu and Ketu in another nakshatra or even another sign. Either can move a placement near a 3°20′ boundary into the next part. Precision also matters: we compute in arc-seconds from raw longitudes rather than from rounded degree-and-minute values.
Free, and no. This page computes your chart and returns it. It creates no account and writes nothing to our database — that is enforced by a test and by a build-time guard, not just by intention.
Each varga magnifies the chart differently, and each demands a different amount of birth-time precision. The hub lists all sixteen with what the śāstra assigns to them.
Divisional charts explained