Vimshottari Dasha

The 120-year timing system most Vedic readings are keyed to: nine planetary periods, entered at the point the birth Moon's nakshatra dictates.

Vimshottari is a nakshatra dasha — a schedule of planetary periods derived from the Moon's position at birth rather than from the ascendant or the Sun. Its name comes from the Sanskrit for a hundred and twenty, which is the length of one full rotation through its nine lords. What it produces for a chart is a calendar: a list of which planet governs which stretch of a life, when each stretch begins and ends, and how far through the current one the chart presently sits. It is the default reckoning in most of the tradition, which is why almost every Vedic reading that mentions timing is quoting a Vimshottari period somewhere underneath.

The nine mahadashas

The nine allotments, in the order the cycle always runs. They total 120 years.

The nine lords and their spans

The cycle runs Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19, Mercury 17 — always in that order, and always returning to Ketu after Mercury. The nine add to a hundred and twenty. Nobody lives the full rotation, so a chart receives a window onto part of it: typically four or five mahadashas over an ordinary lifespan, beginning partway through whichever one contained the birth.

The allotments are not evenly spread, and that unevenness is what gives different lives quite differently shaped calendars. Venus and Saturn hold thirty-nine years between them; the Sun and Ketu together hold thirteen. A chart that enters the sequence at Venus can spend two decades under one governing planet, while a chart entering at the Sun passes through three lords in the same span.

Where a chart enters: the birth Moon's nakshatra

The twenty-seven nakshatras are shared among the nine lords, three each, in the same repeating order as the periods themselves. The lord of the nakshatra occupied by the Moon at the moment of birth is the mahadasha a chart begins in — that single lookup fixes the entire sequence that follows. Ashwini, Magha and Mula belong to Ketu; Rohini, Hasta and Shravana to the Moon; Pushya, Anuradha and Uttara Bhadrapada to Saturn, and so on around the circle.

Because the assignment repeats the nine-lord order three times across twenty-seven asterisms, some regularities fall out of it. Saturn's three nakshatras occupy the same degrees of each of the three water signs; Mercury's three all close a sign; the Moon's three each sit in an earth sign. These are consequences of the arithmetic rather than separate doctrines, but they are the kind of pattern classical commentary returns to.

The balance at birth, and why the first period is short

The Moon is almost never at the exact start of its nakshatra, so a chart enters its first mahadasha partway through. How far through is set by the proportion of the nakshatra already traversed: a Moon a quarter of the way into Pushya begins life with three quarters of Saturn's nineteen years still to run. That remainder is the balance at birth, and it is the reason the first row of any dasha table is shorter than its lord's classical span.

The calculation has a consequence for how the table is read. The engine reports the first period as beginning before the birth — sometimes years before — because that is when a full period containing this Moon position would have opened. Only the portion after the birth moment was lived, so every date shown on this site is measured from the birth moment rather than from the notional start. A first row that appears short is showing the balance, not a different or truncated lord.

Antardashas and the levels below

Each mahadasha subdivides into nine antardashas that run through all nine lords in the same fixed order, beginning with the mahadasha lord itself. Each sub-period takes the share of its parent that its own allotment takes of a hundred and twenty — so an antardasha inside a long mahadasha is long, and inside a short one is brief. The same proportion then applies again for pratyantardashas, and again below those.

In practice the antardasha is where most reading happens. A nineteen-year mahadasha is too coarse a unit to say anything specific about a season of a life; the sub-period beneath it moves on a scale of months to a few years and is what a timing question is usually answered from. The calculator on this site therefore shows the mahadasha list together with the antardashas of whichever period is currently running, which is the pair a practical reading uses.

What a dasha is and is not

A dasha is a schedule, not a forecast. It says which planet governs a stretch of time according to a classical rule; it does not say what will happen, and the tradition's own literature is more careful about this than its popular reception suggests. The results attributed to any given period depend on where that planet sits in the chart, which signs it owns, what aspects reach it, and — for the nodes — what it associates with. Two people in a Saturn mahadasha are not in the same situation.

It is also worth separating a dasha from a transit. A transit is where a planet is now, the same for everyone at a given moment and modulated by natal position; a dasha is a fixed schedule computed once from the birth Moon and unique to a chart. Sade Sati, for instance, is a Saturn transit and not a Saturn dasha — the two can overlap or never meet. Reading them as one thing is the most frequent confusion in this area.

Vimshottari dasha — common questions