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What a navamsa chart is

A navamsa chart (D9) divides each 30° zodiac sign into nine equal slices of 3°20′, creating 108 slices across the entire zodiac. Each 3°20′ slice matches the exact length of a pada, one of the four quarters of a nakshatra, or lunar mansion. In Vedic astrology, tradition reads the D9 alongside your birth chart (D1) to explore partnership themes and see how strongly each planet expresses itself. Rather than predicting events, the D9 highlights underlying tendencies and whether a planet's sign placement supports its D1 themes.

How the navamsa is calculated

Every 30° sign contains nine 3°20′ navamsas, and the starting sign for the count depends on the element of the D1 sign. In fire signs (Aries, Leo, Sagittarius), the nine navamsas count forward in zodiac order starting from Aries. In earth signs (Taurus, Virgo, Capricorn), the nine parts start from Capricorn, while in air signs (Gemini, Libra, Aquarius) they start from Libra. In water signs (Cancer, Scorpio, Pisces), the nine parts start from Cancer and run forward in zodiac order.

In our example chart for March 14, 1991 at 4:18 AM in Chicago, the D1 Sun sits at 29°36′ Aquarius. Because Aquarius is an air sign, its nine navamsas begin with Libra and run through Scorpio, Sagittarius, Capricorn, Aquarius, Pisces, Aries, Taurus and Gemini. At 29°36′ Aquarius, the Sun sits in the ninth 3°20′ slice of the sign, placing it in Gemini in the D9. By the same rule, the lagna, or rising sign, at 15°18′ Capricorn moves to Taurus in the D9. Meanwhile, the Moon at 6°20′ Aquarius lands in Scorpio, Mars at 26°15′ Taurus lands in Leo, and Saturn at 10°00′ Capricorn lands in Pisces.

Vargottama planets

A planet is vargottama when it occupies the exact same zodiac sign in both the D1 birth chart and the D9 chart. In the March 14, 1991 example chart, Venus at 0°50′ Aries sits in the first 3°20′ slice of Aries, so it stays in Aries. Rahu and Ketu, the two lunar nodes, at 1°34′ Capricorn and 1°34′ Cancer also stay in Capricorn and Cancer, making all three placements vargottama. Tradition reads a vargottama planet as expressing itself consistently, because its D1 and D9 sign placements point in the same direction.

Karakamsa and the darakaraka in the D9

Among the chara karakas—movable significators ranked by degree within a sign—the planet at the highest degree is the atmakaraka, or soul significator. When you look at the atmakaraka in the navamsa, the D9 sign it occupies is called the karakamsa. The planet at the lowest degree within any sign is the darakaraka, the partner significator. Tradition links the karakamsa with personal direction, and the darakaraka's D9 sign with partnership themes.

Vedic astrologers use either a seven-planet scheme (Sun through Saturn) or an eight-planet scheme that adds Rahu measured backward from 30°. Across 4,000 random moments from 1950 to 2010, the two schemes gave a different atmakaraka on 12.8% and a different darakaraka on 12.0%. One of the two karakas differed on 24.9% of those test moments, though both schemes agree in our March 14, 1991 example chart. In that chart, the Sun at 29°36′ Aquarius outranks Rahu (30° minus 1°34′ = 28°26′), making the Sun the atmakaraka and Gemini the karakamsa. Venus at 0°50′ Aries has the lowest degree, so Venus is the darakaraka and sits in Aries in the D9.

Why the D9 needs an exact birth time

While the D1 lagna changes about every two hours on average, the D9 lagna changes about every 13 minutes—about nine times as fast. In our March 14, 1991 Chicago chart for 4:18 AM, the D9 lagna stays in Taurus only from 4:12 AM to 4:22 AM. A birth just 4 minutes later would have a different navamsa lagna.

Planets shift too: the Moon changes navamsa about every 6 hours. Without a birth time, the site shows no lagna and no houses in either chart; move the slider through the birth day to see when the Moon changes navamsa.

D9 next to D1

The D1, the birth chart, is the main chart and sets the whole-sign houses from the lagna. The D9 is always read next to the D1, never instead of it. In the example D1, Mercury sits at 11°03′ Pisces (3rd house), Mars at 26°15′ Taurus (5th), and retrograde Jupiter at 10°14′ Cancer (7th). In the D9, Mars moves to Leo while Mercury and Jupiter both land in Libra, showing how the nine-part division regroups the D1 placements.

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