The Statistics of Vedic Birth Charts

Vedic astrology rests on the precise geometry of the sky at the moment of birth. Yet most people never see the wider picture: how common is a particular rising sign, how often a planet is retrograde, or how many charts technically carry a given dosha. To answer these questions with evidence rather than impression, we generated a large sample of birth charts and measured the results.

How the Study Was Done

We computed 20,000 birth charts for moments sampled across a forty-year window (1970–2009), spread evenly across the twenty-four hours of the day and across twenty major Indian cities. Every chart was calculated with the Swiss Ephemeris using the Lahiri (Chitrapaksha) ayanamsha — the same sidereal standard used throughout BhagyaX.

This is a computational study of the chart-space — a measurement of how often each configuration arises when birth moments are sampled fairly. It is not a survey of real individuals, and no personal data of any kind was used. Where house-based features depend on latitude, the results reflect the range of Indian latitudes in the sample.

Rising Signs Are Not Equally Common

It is natural to assume each of the twelve signs is equally likely to be rising at birth. It is not so. Because the zodiac is tilted relative to the celestial equator, some signs take noticeably longer to climb the eastern horizon than others — the classical distinction between signs of long ascension and short ascension. A sign that takes longer to rise spends more time on the Ascendant, and so appears more often.

Cancer, Leo and the signs through to Sagittarius rise slowly and dominate the Ascendant; Aquarius, Pisces and Aries rise quickly and appear least often. This is why two people born only an hour apart can carry different rising signs — and why an exact birth time matters so much. You can find your own rising sign on the Ascendant guide.

Half of All Charts Are "Technically Manglik"

Few topics cause more worry than Mangal Dosha. Under its broad definition — Mars placed in the 1st, 2nd, 4th, 7th, 8th or 12th house from the Ascendant — we found that about 50.4% of charts qualify. That is unsurprising once stated plainly: those are six of the twelve houses, so roughly half of all charts will place Mars in one of them.

Retrograde Planets Are Common

A retrograde planet is often treated as rare or ominous. The geometry says otherwise — the slower outer planets spend a large share of every year in apparent retrograde motion.

Saturn is retrograde in more than a third of all charts, and the much-discussed Mercury retrograde appears in roughly one in five. Far from being an anomaly, retrogression is a routine feature of the sky that Vedic astrology reads for its particular emphasis — a turning inward of the planet's significations.

Combustion: Mercury Lives Beside the Sun

A planet is said to be combust (asta) when it sits too close to the Sun. Because Mercury never strays far from the Sun, it is combust in a large share of charts — we found roughly 45%. Venus, which can wander further, is combust in about 16%. Knowing how ordinary combustion is helps keep its interpretation in proportion.

The Common Yogas Are, Indeed, Common

Many celebrated yogas form far more often than their reputation suggests, because their geometric conditions are easy to satisfy.

Budhaditya Yoga — the Sun and Mercury sharing a sign — appears in over half of charts, simply because Mercury is always near the Sun. Gajakesari Yoga, which needs Jupiter in a kendra from the Moon, occurs in about a third (four of twelve possible positions). Their value lies not in their presence alone but in the strength and condition of the planets involved — which is exactly what a careful reading evaluates.

What the Numbers Mean for Your Chart

Statistics describe the crowd; a horoscope describes the person. These base rates are a reminder that a single feature — a rising sign, a dosha, a famous yoga — rarely decides anything on its own. What gives a chart its meaning is the specific combination: which planets are strong, which houses they rule, how the dashas unfold over a lifetime. A genuine reading is the work of weighing all of this together for one unique birth moment.

Frequently Asked Questions