D10 Chart Calculator — Dasamsa (Dashamsha) Chart

Parashara gives one rule for the tenth division. Each sign of 30° is divided into ten parts of 3° each. In an odd sign (Aries, Gemini, Leo, Libra, Sagittarius, Aquarius) the first part belongs to the sign itself and the count runs forward. In an even sign (Taurus, Cancer, Virgo, Scorpio, Capricorn, Pisces) the count starts from the ninth sign instead.

So a planet at 7° Gemini sits in the third part of an odd sign and moves three signs on from Gemini, counting Gemini as the first, which gives Leo. A planet at 7° Taurus sits in the third part of an even sign, where the count begins at Capricorn, the ninth from Taurus, and lands in Pisces.

The table below is generated from the same function the calculator runs, so you can check any position by hand.

Start with the D10 ascendant and its lord. The ascendant sets the houses for everything else, and the strength of its lord tells you how much the career promise can actually deliver. A strong D10 lagna lord in a kendra or trikona is the single best sign of steady professional growth.

Next, the tenth house of the D10 and the planets in it or aspecting it. This is the career itself. Then look at the planets that carry career by nature: the Sun for authority and government, Saturn for sustained work and service, Mercury for trade and communication, Jupiter for advisory and teaching roles, and Mars for engineering, land and command.

If you use Jaimini methods, find the Amatyakaraka (the planet with the second highest degree in the birth chart) and see where it falls in the D10. A well placed Amatyakaraka here often shows the field a person ends up being known for, even when the first jobs point elsewhere.

Each 3° part of a sign has a presiding deity, the guardians of the ten directions. In odd signs the order is Indra, Agni, Yama, Rakshasa (Nirriti), Varuna, Vayu, Kubera, Ishana, Brahma and Ananta. In even signs the same list runs in reverse, starting with Ananta.

Classical commentators read the deity as the flavour of a planet’s contribution to career. Indra parts are linked with leadership and recognition, Kubera with wealth earned through work, Yama with discipline and rule, Rakshasa with struggle or unconventional paths. Treat this as a refinement after the houses and lords, not a replacement for them.

The D10 never stands alone. First see what the birth chart promises through its own tenth house and tenth lord. Then find where the D1 tenth lord falls in the D10: in a kendra or trikona of the Dashamsha it confirms the promise, in the sixth, eighth or twelfth it suggests the career will take effort, changes or work far from home.

A planet in the same sign in D1 and D10 is vargottama for this chart, and it tends to give consistent results in career matters. A planet exalted in the D1 but debilitated in the D10 often shows talent that is not easily turned into professional standing.

For timing, watch the Vimshottari dasha and antardasha of planets that are strong in the D10 or connected with its tenth house. Job changes, promotions and moves into business usually arrive in those periods. You can see your current periods with the Mahadasha calculator and read them against this chart.

The D10 ascendant changes far more often than the birth-chart ascendant. Sweeping one full day at New Delhi, it changed 114 times, on average every 12.6 minutes. The shortest stretch was 8.4 minutes and the longest 28.2.

The long stretches happen where an odd sign hands over to an even one. The last part of Aries and the first part of Taurus both fall in Capricorn, so the D10 ascendant stays put across the boundary. Elsewhere it can move on in under ten minutes.

In practice: if your recorded time is rounded to the nearest quarter hour, the D10 ascendant may be one sign off. Planets move slowly enough that their D10 signs are almost always right; the houses are what shift. If the D10 houses do not match your actual career, check the time with the birth time rectification tool before drawing conclusions.

Take the sample chart below. The ascendant is at 4°11′ Sagittarius, the second 3° part of an odd sign, so the D10 ascendant is Capricorn. The Sun at 0°51′ Capricorn is in the first part of an even sign; the count starts from the ninth sign, which is Virgo.

The Moon at 17°30′ Leo sits in part 6 of Leo, an odd sign, and lands in Capricorn: the same sign as the D10 ascendant, so the Moon occupies the first house of this career chart. A reading would start there, with public dealings and a career shaped by the public, and then turn to the tenth house and its lord.

Almost every modern program follows the Parashari rule above, odd signs from themselves and even signs from the ninth, and so does this calculator. Some older regional texts count even signs from the sign itself, which shifts every even-sign planet by eight signs. If you compare charts from two programs and only even-sign planets disagree, this is usually why.

A second difference is the ayanamsa. This calculator uses Lahiri by default. Another ayanamsa can move planets by a degree or more (Raman’s differs from Lahiri by about a degree and a half), which is half of a Dashamsha part, so a planet near a part boundary can change sign between programs.