Navamsa Chart Calculator

How a sign is cut into nine

Brihat Parasara Hora Sastra gives the rule in its chapter on the sixteen divisions. For a movable sign — Aries, Cancer, Libra, Capricorn — the nine navamsas are counted from the sign itself. For a fixed sign — Taurus, Leo, Scorpio, Aquarius — counting begins at the ninth sign from it. For a dual sign — Gemini, Virgo, Sagittarius, Pisces — it begins at the fifth. Put another way, every fire sign starts its navamsas at Aries, every earth sign at Capricorn, every air sign at Libra and every water sign at Cancer.

To place a body by hand, take its degree within the sign, find which 3°20′ slice it falls in, and count on from the starting sign. Jupiter in the worked example sits at Capricorn 13°07′. Capricorn is movable, so the count starts at Capricorn itself; 13°07′ lies in the fourth slice, 10°00′ to 13°20′; three signs on from Capricorn is Aries, which is where the table puts it. The navamsa degree is the distance into the slice multiplied by nine, and Jupiter's reads 28°05′ because it is close to the far end of its slice.

One navamsa, one nakshatra pada

There are 27 nakshatras of 13°20′, each split into four padas of 3°20′. Twenty-seven times four is 108, and a pada has exactly the width of a navamsa, so the two grids coincide: every pada is one navamsa and nothing else. Ashwini's four padas are the Aries, Taurus, Gemini and Cancer navamsas, Bharani's first pada is the Leo navamsa, and the run continues without a break to the fourth pada of Revati, which is the Pisces navamsa.

The worked example shows the link twice. Its Rasi lagna, Scorpio 11°23′, is in the third pada of Anuradha, and its navamsa lagna is Libra; the third pada of Anuradha is the Libra navamsa. The Moon, at Aquarius 3°18′, is in the third pada of Dhanishta, and the Moon's navamsa sign is Libra too. Anyone who knows the pada of their janma nakshatra already knows the Moon's navamsa sign without casting anything.

Vargottama: when the sign survives the division

A body is vargottama when its navamsa sign is the same as its Rasi sign. Because of the counting rule, every sign holds exactly one such slice: the first navamsa of a movable sign, the fifth — the middle one, 13°20′ to 16°40′ — of a fixed sign, and the ninth and last of a dual sign. Twelve of the 108 slices qualify, one in nine, and the test is purely positional: no aspect, house or dignity enters into it.

Classical texts treat a vargottama placement as a mark of strength — the sign a planet occupies is confirmed when the sign is divided rather than contradicted by it — and in its chapter on the dashas (chapter 46) Parashara's text reserves one system, the Shatabdika dasha, for a chart whose lagna is vargottama. The second table on this page runs the test for the lagna and all nine grahas, headed by a one-line summary that names the bodies that pass or says that none do.

Reading the 1961 example row by row

The Rasi chart has four bodies in Scorpio — the Sun at 27°25′, Mars at 27°54′, Mercury at 25°34′ and Venus at 16°33′ — and the navamsa pulls them apart. The Sun and Mars both sit in Scorpio's last slice, so both land in Pisces, the sixth house from the D9 lagna. Mercury, one slice earlier, lands in Aquarius in the fifth. Venus falls in Scorpio's middle slice and stays in Scorpio: it is the chart's only vargottama body, about seven minutes of arc inside the slice's far edge.

The lagna is not vargottama. Scorpio 11°23′ falls in the fourth slice of a fixed sign, which counts to Libra, so the D9 lagna is Libra at 12°32′, with the Moon in the same sign at 29°46′. Saturn moves from Capricorn to Aquarius, joining Mercury in the fifth house of the D9; Jupiter moves from Capricorn to Aries in the seventh; and the nodes fall across Pisces and Virgo, Rahu in the sixth beside the Sun and Mars, Ketu in the twelfth.

Someone using the D9 chart for marriage questions would begin from exactly these rows: the navamsa lagna and its lord (Venus, which rules Libra and sits vargottama in Scorpio in the second house), the seventh house of the D9 (Aries, holding Jupiter), and that house's lord (Mars, in Pisces in the sixth). Those are the placements a classical reading weighs. What it concludes from them depends on the rest of the chart and on the dashas, and this page does not draw that conclusion.

What the navamsa is read for

Chapter 7 of Brihat Parasara Hora Sastra assigns each division a field of life, and to the navamsa it gives the spouse. That is the root of the familiar practice of reading the D9 for partnership — the seventh house of the navamsa, its lord, Venus as the natural significator of a partner, and the condition of the navamsa lagna. A reading of this kind describes; it does not set dates, which in the classical system come from the dashas and transits read against the Rasi chart.

The navamsa also has a broader job: checking dignity. Each planet's navamsa sign is a finer reading of where it stands, so practitioners compare dignity across the two charts. A planet exalted in the Rasi but debilitated in the navamsa is commonly read as less dependable than its D1 position suggests, and the reverse case as firmer. The same comparison feeds the divisional strength schemes, and in the six- and seven-chart schemes the navamsa carries the largest share of weight after the Rasi itself.

Where the D9 runs out

A divisional chart is only as precise as the birth time behind it. The navamsa lagna changes sign roughly every thirteen minutes on average, so a time rounded to the nearest half hour can easily give the wrong D9 lagna and every house position that follows from it. In the worked example the rising degree is under two degrees short of Scorpio's middle navamsa; a birth something like eight minutes later would have produced a Scorpio navamsa lagna, and a vargottama one.

Planets are steadier but not immune. Each changes navamsa every 3°20′, which takes the Moon about six hours, and a body near a boundary can land on either side of it depending on the ayanamsa chosen. The example's Moon, at 29°46′ Libra in the D9, is less than two minutes of arc from passing into the Scorpio navamsa — a few minutes of clock time.

Only the lagna and the nine classical grahas, Rahu and Ketu among them, are drawn; Uranus, Neptune and Pluto have no place in the divisional scheme. And the D9 refines the Rasi chart rather than replacing it: a navamsa placement is read as a qualification of the same planet's D1 position, never as a separate horoscope with verdicts of its own.

How do I find my navamsa chart from my date of birth?

You need the date, the exact time and the place. The date alone fixes the navamsa signs of most of the slower planets, but the navamsa lagna passes through all twelve signs nine times a day, so without a reliable time the houses of the D9 cannot be drawn. Enter all three in the form above and the calculator returns the full D9 with each body's sign, degree and house.

What is a vargottama planet in the D9 chart?

Vargottama joins varga, a division, with uttama, best. It describes a planet, or the lagna, that holds an identical sign in the Rasi chart and the navamsa, which happens only when it falls in the single ninth-part of its sign that maps back onto that sign. Traditional readings take it as steadiness and strength. The comparison table on this page flags it row by row.

Which house in the navamsa chart is seen for the spouse?

By convention, the seventh house of the D9, counted from the navamsa lagna, together with its lord and with Venus. Readers also look at the navamsa lagna itself and at any planets placed with the seventh lord. These are descriptive factors read alongside the seventh house of the Rasi chart; none of them on its own decides when or whom anyone marries.

Why is my navamsa lagna different from my ascendant?

Because they answer different questions. The ascendant is the sign rising at the moment of birth; the navamsa lagna is the sign allotted to the ninth-part of that sign in which the rising degree falls. Only one ninth-part of each sign maps back onto itself, so in most charts the two differ. When they agree, the lagna is vargottama.

Can a few minutes of birth time change the D9 chart?

Yes. The rising degree crosses into a new navamsa roughly every quarter of an hour, so the D9 lagna — and with it every house of the chart — can shift with a small error in the recorded time. The navamsa signs of the planets are more stable, the fast-moving Moon apart. If your time is uncertain, treat the D9 houses as provisional.

Is the navamsa chart more important than the birth chart?

No. Classical practice reads the Rasi chart first and turns to the navamsa to refine it — to test whether a planet keeps its dignity, and to look more closely at partnership. A well-placed D9 position can qualify a weak D1 position, but the navamsa is not read as a replacement horoscope, and nothing in it overrides the birth chart.