What is Vimshottari Dasha?

Vimshottari Dasha (Sanskrit for 'one hundred and twenty') is the principal Vedic astrological timing system. It divides a 120-year cycle across the nine grahas (Sun through Saturn, plus the lunar nodes Rahu and Ketu) in a fixed sequence with fixed year-durations. The starting point in the sequence is determined by the nakshatra the Moon occupies at birth. Each major period (Mahadasha) is then subdivided into nine sub-periods (Antardashas), and each Antardasha into nine sub-sub-periods (Pratyantardashas), forming a layered timing scaffold accurate to weeks.

What are the Vimshottari year durations?

The canonical year durations are fixed and must never be altered: Ketu 7 years, Venus 20 years, Sun 6 years, Moon 10 years, Mars 7 years, Rahu 18 years, Jupiter 16 years, Saturn 19 years, Mercury 17 years. Total: 120 years. These come from Brihat Parashara Hora Shastra and are repeated identically in Phaladeepika, Saravali, and every classical text. Any astrologer or tool that uses different durations is not following the classical Vimshottari system.

How is the starting Mahadasha determined?

By the nakshatra the Moon occupies at the moment of birth. The 27 nakshatras are mapped in groups of three to the 9 grahas: nakshatras 1, 10, 19 (Ashwini, Magha, Mula) are ruled by Ketu, so a person born under one of these starts in a Ketu Mahadasha. Nakshatras 2, 11, 20 are Venus. 3, 12, 21 are Sun. And so on. The exact starting age of the next Mahadasha is computed from how much of the natal nakshatra had elapsed at birth — this is why two people born on the same day in different cities can have very different starting points.

What does a Mahadasha activate?

A Mahadasha activates the themes of the planet whose period is running, modified by that planet's specific placement in your birth chart. The mature themes per classical tradition: Sun — authority, recognition, paternal matters; Moon — emotional life, mother, public reputation; Mars — energy, action, conflict, real estate; Mercury — communication, learning, commerce; Jupiter — wisdom, expansion, marriage, children; Venus — relationships, comfort, art, sensuality; Saturn — discipline, long-term work, slow ripening; Rahu — sudden expansion, foreign matters, ambition; Ketu — spiritual depth, separation, withdrawal. The actual experience depends on the planet's dignity and house lordships in your specific chart.

What is an Antardasha?

An Antardasha (also called Bhukti) is a sub-period within a Mahadasha. Each Mahadasha is divided into nine Antardashas — one for each graha in the same Vimshottari sequence. The duration of each Antardasha is proportional to its own Mahadasha length (so within a 20-year Venus Mahadasha, the Venus-Venus Antardasha runs about 3 years 4 months, while the Venus-Mars Antardasha runs about 1 year 2 months). The Antardasha refines the Mahadasha — it tells you which sub-theme of the running Mahadasha is active at any given moment.

What is a Pratyantardasha?

A Pratyantardasha is the third layer down — a sub-sub-period within an Antardasha. Each Antardasha is further divided into nine Pratyantardashas (again following the same Vimshottari sequence and proportional durations). The Pratyantardasha gives weeks-to-months level timing precision. Serious classical work also uses Sookshma (4th layer) and Prana (5th layer) but those are rarely consulted outside professional rectification work.

Are there other dasha systems besides Vimshottari?

Yes — Brihat Parashara Hora Shastra lists more than 30 dasha systems, including Ashtottari (108 years, used for some Moon-prominent charts), Yogini (36 years, popular in North India), Chara Dasha (Jaimini-school, based on signs not nakshatras), Kalachakra Dasha, and many more. Vimshottari is the most widely-used because BPHS gives it primacy and because empirical experience over centuries has shown it to be the most consistently reliable for events. AstroPal's primary dasha display is Vimshottari; other systems can be added in the chat by asking explicitly.

How does AstroPal use Dasha?

Vimshottari Dasha is at the core of every timing question in AstroPal. The chart shows your current Mahadasha and Antardasha (and the Pratyantardasha on click). The AI chat factors in the running dasha for every interpretive answer — when you ask about marriage timing, career change, or health windows, the system computes the answer from your dasha context. The dasha sequence is also a key input to the Compatibility module (Dasha Sandhi risk check) and the Muhurtha module (electional astrology evaluates the proposed date against the running dasha). All durations are canonical per the classical year-list.

Vimshottari Dasha expliqua

Vimshottari Dasha — le système de chronométrage védique de 120 ans, expliqué.

Par R. Sivadas · Fondateur, AstroPal · Dernière mise à jour June 2026

Vimshottari Dasha est l’échafaudage temporel de l’astrologie védique. Alors que le thème natal décrit CE que la vie réserve, le dasha vous indique QUAND. Cette page explique le calcul classique, les durées canoniques des années, les trois couches (Mahadasha — Antardasha — Pratyantardasha), et ce que la période de chaque planète active — attribuée à Brihat Parashara Hora Shastra et Phaladeepika.

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Votre graphique libre montre votre Mahadasha actuelle. Les forfaits payants (Seeker et plus) montrent la séquence complète de 120 ans de Vimshottari avec les Antardashas et les Pratyantardashas.

Ce qu’est Vimshottari Dasha

The Sanskrit word vimshottari means “one hundred and twenty” — the number of years in the full cycle. The system divides this 120-year cycle across the nine grahas (Sun, Moon, Mars, Mercury, Jupiter, Venus, Saturn, Rahu, Ketu) in a fixed sequence with fixed durations. Each person's life maps onto this 120-year cycle starting at a specific point determined by their birth-Moon's nakshatra.

Source: Brihat Parashara Hora Shastra — the foundational Sanskrit text. The system is then repeated in Phaladeepika (Mantreshwara, ~13th c.), Saravali (Kalyana Varma), Jataka Parijata (Vaidyanatha), and every major classical authority.

Les durées des années canoniques (ne jamais les modifier)

La séquence de Vimshottari et la durée des années sont fixées par les textes classiques. Tout astrologue ou outil qui les fait varier n’utilise pas le système classique de Vimshottari. La séquence est la suivante :

Ketu — 7 years
Venus (Shukra) — 20 years
Sun (Surya) — 6 years
Moon (Chandra) — 10 years
Mars (Mangala) — 7 years
Rahu — 18 years
Jupiter (Guru) — 16 years
Saturn (Shani) — 19 years
Mercury (Budha) — 17 years

Total : 120 ans. Après Mercure, le cycle revient à Ketu et se répète — bien que peu de gens vivent pour voir cela se produire (le deuxième cycle revient à 120 ans + premier Ketu-reste).

Comment le Mahadasha initial est calculé

La Mahadasha de départ est déterminée par le nakshatra que la Lune occupe au moment de la naissance. Les 27 nakshatras sont cartographiés par groupes de trois sur les 9 grahas :

Ketu's nakshatras: Ashwini, Magha, Mula (1st, 10th, 19th).
Venus's: Bharani, Purva Phalguni, Purva Ashadha (2nd, 11th, 20th).
Sun's: Krittika, Uttara Phalguni, Uttara Ashadha (3rd, 12th, 21st).
Moon's: Rohini, Hasta, Shravana (4th, 13th, 22nd).
Mars's: Mrigashira, Chitra, Dhanishta (5th, 14th, 23rd).
Rahu's: Ardra, Swati, Shatabhisha (6th, 15th, 24th).
Jupiter's: Punarvasu, Vishakha, Purva Bhadrapada (7th, 16th, 25th).
Saturn's: Pushya, Anuradha, Uttara Bhadrapada (8th, 17th, 26th).
Mercury's: Ashlesha, Jyeshtha, Revati (9th, 18th, 27th).

Une personne dont la Lune natale est assise à Ashwini commence sa vie dans un Ketu Mahadasha ; celui dont la Lune est assise à Rohini commence par la Lune Mahadasha ; et ainsi de suite.

L’âge exact de départ — le moment où le prochain Mahadasha commence — dépend de la quantité de nakshatra natale déjà écroulée à la naissance. Un enfant né juste après le début de Rohini aura une longue Mahadasha de la Lune à vivre pendant presque 10 ans ; un naître juste avant la fin de Rohini n’aura que quelques mois. Deux frères et sœurs nés des mêmes parents à des moments différents peuvent donc commencer à des moments complètement différents du cycle. AstroPal calcule cela avec une précision sub-seconde d’arc via Swiss Ephemeris.

Les trois couches — Mahadasha / Antardasha / Pratyantardasha

1. Mahadasha (la période majeure)

La Mahadasha est la division de haut niveau — la planète dont la période domine de 6 à 20 ans de votre vie selon le graha qui dirige. La Mahadasha définit la couleur générale de ce chapitre de vie. Une personne dans sa Jupiter Mahadasha vit une période différente de 16 ans de celle de sa Mars Mahadasha — même si le reste de son thème est identique.

2. Antardasha (également appelée Bhukti)

Chaque Mahadasha est subdivisée en neuf Antardashas — un pour chaque graha dans la même séquence Vimshottari. La durée de chaque Antardasha est proportionnelle : un Antardasha prend sa part du Mahadasha parent égale au poids Vimshottari propre de cette planète divisé par 120. Ainsi, en 20 ans de Vénus Mahadasha :

Vénus-Vénus Antardasha : 20 × 20/120 = 3 ans 4 mois
Antardasha Vénus-Soleil : 20 × 6/120 = 1 an
Antardasha Vénus-Lune : 20 × 10/120 = 1 an 8 mois
Antardasha Vénus-Mars : 20 × 7/120 = 1 an 2 mois
... et ainsi de suite pour chacun des 9.

L’Antardasha affine le Mahadasha — il vous indique quel sous-thème de la Mahadasha en cours est activé à ce moment précis. L’Antardasha Vénus-Saturne dans une Mahadasha Vénus est une expérience très différente de l’Antardasha Vénus-Jupiter, même si les deux relèvent du même chapitre global de Vénus.

3. Pratyantardasha (la couche semaine par mois)

Chaque Antardasha est à nouveau divisé en neuf Pratyantardashas selon la même règle proportionnelle. Cela donne une précision temporelle jusqu’à des semaines ou des mois — la résolution nécessaire pour une prédiction sérieuse d’événements. Au-delà de Pratyantardasha se trouvent deux couches supplémentaires (Sookshma et Prana), mais celles-ci sont rarement consultées en dehors des travaux professionnels de rectification.

Ce que le Mahadasha de chaque planète active typiquement

Les signatures classiques, selon Phaladeepika et BPHS. L’expérience réelle dépend de la dignité de la planète et des seigneuries de maison dans votre thème spécifique — un Saturne fort et bien placé produit une Mahadasha de Saturne très différente d’une Mahadasha affligée et affaiblie.

Sun (6 years) — authority, recognition, government matters, paternal relationships, ego maturation, self-discovery as the centre of one's life.
Moon (10 years) — emotional life, mother, public reputation, fluctuating moods, popularity, the inner life surfacing.
Mars (7 years) — energy, action, conflict, sports, real estate, surgery, courage, siblings, competitive endeavour.
Mercury (17 years) — communication, learning, commerce, intellect, writing, networks, friends, intellectual maturation.
Jupiter (16 years) — wisdom, expansion, philosophy, teachers, marriage, children, prosperity, ethical maturation. Often the most beneficial Mahadasha.
Venus (20 years) — relationships, comfort, art, sensuality, marriage, beauty, refinement. The longest Mahadasha — a substantial chunk of a life.
Saturn (19 years) — discipline, long-term work, slow ripening of effort, restrictions, structural change, hard-earned maturity. Often the most demanding Mahadasha.
Rahu (18 years) — sudden expansion, foreign matters, ambition, materialism, unconventional success, illusions, intense desire.
Ketu (7 years) — spiritual depth, separation, withdrawal, sudden cuts, mystical experience, dissolution of attachments.

Aucun de ces résultats n’est destiné. La Mahadasha est l’influence temporelle dominante ; les facteurs de la carte (position des planètes, aspects, cartes Varga) déterminent COMMENT cette influence est ressentie.

Comment AstroPal utilise votre séquence dasha

Chaque réponse liée au timing dans AstroPal est calculée en référence à votre Mahadasha et Antardasha actuels. Le graphique montre votre Mahadasha actuelle en permanence en haut de la chronologie dasha. La couche de stade de vie sensible à l’âge du chat prend en compte votre dasha en cours lorsqu’on répond à propos du mariage, de la carrière, de la santé, des enfants ou de toute question temporelle.

The dasha timeline on /chart — shows your full 120-year Vimshottari sequence (paid plans), highlights the current Mahadasha, and lets you drill down into Antardashas and Pratyantardashas with classical Sanskrit names alongside English.
The AI chat — receives the full dasha sequence in its context and uses canonical year durations (Ketu 7, Venus 20, etc.) hardcoded into the system prompt so it never invents periods.
The Compatibility module — checks Dasha Sandhi risk — the dangerous transitions where one major period hands off to the next, sometimes around the wedding date.
The Muhurtha module — evaluates proposed dates against your running dasha. A wedding scheduled during a benefic dasha thrives; one during a difficult dasha faces unnecessary headwinds.

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Questions fréquemment posées

Comment savoir quel Mahadasha je dirige en ce moment ?

Generate your free birth chart and the dasha card displays your current Mahadasha and Antardasha. The Sanskrit graha name and English label appear together. The start and end dates are computed to the day.

Certaines Mahadashas sont-elles toujours bonnes et d’autres toujours mauvaises ?

No. The reputation of “Jupiter Mahadasha is always best” or “Saturn Mahadasha is always hardest” is a popular oversimplification. The classical authorities are explicit that a planet's effect during its Mahadasha depends on (a) its natural significations, (b) its dignity in your chart (own sign, exalted, debilitated), (c) the houses it owns for your specific Lagna, (d) its aspects and conjunctions. A weak Jupiter can produce a difficult Jupiter Mahadasha; a strong Saturn produces a constructive Saturn Mahadasha.

Quelle est la relation entre Sade Sati et Dasha ?

Sade Sati is Saturn's TRANSIT — the slow-moving real-time motion of Saturn through the signs around your Moon. The dasha is the natal timing scaffold. The two interact: Sade Sati during a Saturn-friendly Mahadasha is much milder than Sade Sati during a Mars or Sun Mahadasha. Both must be read together for accurate timing.

Pourquoi le cycle est-il de 120 ans et non de 100 ou 144 ?

La réponse classique (selon Sage Parashara comme indiqué dans le BPHS) est que 120 ans est la durée de vie humaine naturelle maximale, et que les proportions des durées annuelles codent les poids cosmiques relatifs des neuf grahas. Les chiffres eux-mêmes sont présentés comme une tradition reçue ; Les textes ne les découlent pas de principes fondamentaux. Elles se sont révélées empiriquement cohérentes à travers des siècles d’observation — ce qui est la norme classique.

Aller plus loin

For the most important divisional chart that refines dasha interpretation, see Navamsa explained. For Saturn's transit during your Saturn-period (or any period), see Sade Sati explained. For the foundational Vedic chart, see Kundli Explained.

Divulgation honnête

Vimshottari Dasha is a multi-millennia documentary timing system with rigorous internal mathematics. It has not been peer-reviewed-validated as predictive of life events. We present it as the classical texts present it — a structured framework for thinking through life-timing, with canonical year durations and consistent rules — not as fate. The chart computations (planetary positions, nakshatras, dasha start-dates) are precise astronomy; the interpretations of what each period means are symbolic.