About Vedic Astrology

What is Vedic astrology? A plain-English guide to Jyotish.

By R. Sivadas · Founder, AstroPal · Last updated June 2026

Vedic astrology — called Jyotish in Sanskrit — is the traditional astrological system of the Indian subcontinent. It is one of the oldest continuously practised astrological traditions in the world, with foundational texts composed between roughly the 6th and 15th centuries CE and still studied today by practitioners worldwide. This page explains what Vedic astrology is, how it differs from the Western system most readers know, and the components that make up a Vedic birth chart.

If you are looking for how AstroPal computes and interprets charts specifically, see the methodology page. For the list of classical texts the AI is grounded in, see sources.

The Sanskrit word “Jyotish”

Jyotish (ज्योतिष) is the formal Sanskrit name for the discipline. The word combines jyoti (light) with isha (lord, or in this context “science of”) — literally, “the science of light.” The name reflects the discipline’s origin as the study of celestial luminaries: the Sun, Moon, planets, and stars as observed from Earth. The English term “Vedic astrology” came into common use in the late twentieth century to distinguish it from the dominant Western astrological tradition; both names refer to the same body of practice.

Where Vedic astrology comes from: the classical texts

Vedic astrology is a documentary tradition. Its rules — how to compute planetary positions, how to derive divisional charts, how to identify yogas (planetary combinations), how to assign planetary periods — come from a body of classical texts that practitioners treat as the technical reference. The most widely cited include:

• Brihat Parashara Hora Shastra — attributed to sage Parashara, generally regarded as the foundational text. Covers chart construction, divisional charts, yogas, and dashas in roughly 100 chapters.
• Phaladeepika — by Mantreshwara, c. 14th century. Compact, widely used, especially for results of planetary placements and yogas.
• Saravali — by Kalyana Varma, c. 9th century. Detailed treatment of planetary configurations and their classical interpretations.
• Jataka Parijata — by Vaidyanatha, c. 15th century. Encyclopedic synthesis drawing on earlier sources.
• Brihat Samhita — by Varahamihira, c. 6th century. Broad in scope, including mundane astrology and natural omens alongside personal horoscopy.
• Uttara Kalamrita — by Kalidasa, c. 11th century. Important for understanding karakas (planetary significators) and house meanings.

AstroPal indexes sixteen such texts and surfaces the relevant verse when answering any interpretive question. The full list is on the sources page.

Vedic vs Western astrology: the sidereal zodiac

The single largest technical difference between Vedic and Western astrology is the zodiac. Vedic astrology uses the sidereal zodiac, which measures planetary positions against the fixed background of stars. Western astrology uses the tropical zodiac, which is anchored to the seasons — specifically, to the vernal equinox.

The two zodiacs were aligned roughly two thousand years ago, but because of the Earth’s slow axial wobble (the precession of the equinoxes), they have drifted apart at about one degree every seventy-two years. They are currently offset by approximately twenty-four degrees. The offset is called the ayanamsa, and there are several formulations of it in use. The most common in modern Vedic practice is the Lahiri ayanamsa (sometimes called Chitrapaksha), adopted as the Indian government standard in 1955. Goravani Jyotish Studio — and therefore AstroPal — defaults to Lahiri, with Raman, Krishnamurti, Yukteshwar, and Fagan–Bradley selectable as alternatives.

The practical consequence: a person whose Sun is in Taurus in a Western chart will often be in Aries in a Vedic chart. Neither system is “more correct” in any absolute sense — they are different reference frames built on different assumptions, and each has its own internal logic.

The components of a Vedic birth chart (kundli)

A Vedic birth chart, called a kundli in common Indian usage and janma kundali in formal Sanskrit, records the sky at the exact moment and place of birth. The standard chart contains:

• The Lagna (Ascendant) — the degree of the zodiac rising on the eastern horizon at the moment of birth. The Lagna determines how the twelve houses are laid out.
• The nine grahas (planets) — Sun (Surya), Moon (Chandra), Mars (Mangala), Mercury (Budha), Jupiter (Guru), Venus (Shukra), Saturn (Shani), and the two lunar nodes Rahu and Ketu. Vedic astrology treats Rahu and Ketu as graha-equivalents and does not use Uranus, Neptune, or Pluto.
• The twelve houses (bhavas) — twelve life-area divisions, each governing a defined set of subjects. The 1st house relates to the self and body; the 2nd to wealth and family; the 4th to home and mother; the 7th to partnership; the 10th to career; the 12th to expenditure and liberation. The complete house meanings come from the classical texts (Phaladeepika and BPHS in particular).
• The 27 nakshatras (lunar mansions) — a division of the ecliptic into twenty-seven equal segments of 13°20′ each, named after fixed stars. The nakshatra in which the Moon falls at birth is the Janma Nakshatra and is one of the most consulted single placements in Vedic practice.
• The divisional charts (vargas) — sixteen subsidiary charts derived from the main chart by mathematical subdivision. The Navamsha (D9) and Dashamsha (D10) are the two most consulted; the Shastiamsha (D60) is the finest division and used for granular analysis.

The 27 nakshatras

The nakshatras are perhaps Vedic astrology’s most distinctive feature. The 360-degree ecliptic is divided into 27 equal segments, each named after a constellation or fixed star and assigned to one of the nine grahas as ruler. The Moon, which traverses the entire zodiac in roughly 27.3 days, occupies one nakshatra per day — hence the connection to lunar timing. The nakshatra in which a person’s Moon falls at birth determines their Vimshottari Dasha sequence, sets their compatibility profile under the Ashtakoota system, and is consulted in muhurtha (electional astrology) for choosing auspicious times.

Planetary periods: the Vimshottari Dasha

Western astrology emphasises ongoing transits as its primary timing tool. Vedic astrology has transits too, but its principal timing system is the dasha — a sequence of planetary periods, each lasting a fixed number of years, that together cover a span of 120 years. The most widely used system is the Vimshottari Dasha, in which each of the nine grahas rules for a set duration: Ketu 7 years, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19, Mercury 17. The starting point of the sequence is determined by which nakshatra the Moon occupies at birth. Within each major period (mahadasha), there are sub-periods (antardasha) and sub-sub-periods (pratyantardasha), forming a layered timing scaffold that practitioners use to identify when specific themes are most active in a person’s life.

Divisional charts (vargas)

A varga is a subsidiary chart derived from the main (Rashi or D1) chart by mathematical division. The sixteen standard vargas, called the Shodashavarga, are:

• D1 Rashi — the main chart; the foundation for everything else.
• D2 Hora — wealth.
• D3 Drekkana — siblings and short journeys.
• D4 Chaturthamsha — fortune, property.
• D7 Saptamamsha — children and progeny.
• D9 Navamsha — spouse, dharma, the fine print of every other chart.
• D10 Dashamsha — career and profession.
• D12 Dwadashamsha — parents.
• D16 Shodashamsha — vehicles and comforts.
• D20 Vimshamsha — spiritual practice.
• D24 Chaturvimshamsha — education and learning.
• D27 Bhamsha — strength and weakness.
• D30 Trimshamsha — misfortune and challenges.
• D40 Khavedamsha — maternal lineage indications.
• D45 Akshavedamsha — paternal lineage indications.
• D60 Shastiamsha — the finest division; considered the deepest by Parashara himself.

The vargas are not optional extras — in serious Vedic practice, a question is rarely answered from the D1 alone. A career question is checked against both D1 and D10; a marriage question against D1 and D9; a finance question against D1 and D2. The principle is convergence: a configuration is held to be reliable only when multiple charts agree.

Yogas (planetary combinations)

A yoga in Vedic astrology is a specific configuration of two or more planets (or planets and houses) that the classical texts treat as a unit. There are hundreds of named yogas across the literature; a few well-known examples include the Pancha Mahapurusha Yogas (formed when Mars, Mercury, Jupiter, Venus, or Saturn occupy their own or exaltation signs in an angular house), Gaja Kesari Yoga (Jupiter in an angle from the Moon), and Neecha Bhanga Raja Yoga (a yoga of debility-cancellation). Yogas are computational facts — either present in a chart or not — and their meanings come from the texts that name them.

Planetary strengths: Shadbala, Bhavabala, Ashtakavarga

Beyond placement, Vedic astrology assigns numerical strength scores to every planet and house. The three main systems are:

• Shadbala — six-fold planetary strength: positional, directional, temporal, motional, natural, and aspectual. Each planet is scored against a required threshold (e.g. Jupiter needs 6.5 rupas to be considered strong by classical standards).
• Bhavabala — three-fold house strength: positional, occupational, and aspectual.
• Ashtakavarga — a points-allocation system from the Parashari literature in which every house in every planet’s individual chart receives benefic points (bindus), used to read transit timing and house strength.

These are not modern inventions — the calculation procedures come directly from the classical texts, principally BPHS. AstroPal computes all three for every chart and surfaces them on the strength dashboard.

How AstroPal approaches Vedic astrology

AstroPal’s philosophy is twofold. First, the computation must be professional-grade — the same Goravani Engine that has been the reference for serious Vedic astrologers since 1993 produces every chart, divisional chart, dasha sequence, yoga list, and strength score on AstroPal. Second, every interpretive sentence the AI produces is grounded: it is either a direct computed fact from the engine, or a retrieved citation from one of the sixteen indexed classical texts. The AI is not permitted to generate “astrology-flavoured” text on its own; if no classical reference applies, the answer says so plainly.

The full technical description is on the methodology page. The complete list of indexed texts is on the sources page. If you want to see your own chart, the Lagna calculation, the dasha currently active for you, and your computed yogas, you can generate a free chart — no card required.

Frequently asked questions

Continue reading: how AstroPal computes and interprets charts · the 16 classical texts AstroPal cites · general FAQ.

How to use astrology responsibly — our Guidance Statement covers what AstroPal will and will not answer, the Five Foundations, and the anti-fatalism principle.