What is Vimshottari dasha?
By the Dasha90 team · published 31 Aug 2026
Think of your life as a very long train ride with nine drivers who take turns. The Moon’s spot in the sky when you were born decides which driver goes first and how long they’ve already been driving. This page shows how the turns work.
The system in one paragraph
Your life is like one very long drive of 120 years shared by nine drivers who take turns. Each driver always keeps the wheel for the same number of years — Venus longest (20), the Sun shortest (6).
Vimshottari dasha is Jyotisha’s most widely used timing system. It divides life into a repeating 120-year cycle of nine planetary periods called mahadashas: Ketu (7 years), Venus (20), Sun (6), Moon (10), Mars (7), Rahu (18), Jupiter (16), Saturn (19) and Mercury (17). Where you enter that cycle — and how much of the first period you have left at birth — is fixed entirely by the Moon’s exact sidereal position at the moment you were born.
How your Moon seeds the sequence
The Moon’s road has 27 parking spots, and each spot belongs to one driver. Whichever spot the Moon was parked in at your birth — that driver was already driving. How far the Moon had rolled through the spot tells us how much of that turn was already used up.
The sidereal zodiac divides into 27 nakshatras of 13°20′ each. Every nakshatra has a Vimshottari lord, repeating in the nine-lord order starting from Ashwini (Ketu). The nakshatra your Moon occupies at birth names your first mahadasha lord.
Hover the ring — three nakshatras answer to every lord, and whichever one holds your Moon decides where your 120-year chain begins.
Krittika is ruled by Sun — a Moon here starts in the Sun mahadasha
drag anywhere on the bar — the balance at birth is pure proportion
The fraction of the nakshatra the Moon has already crossed tells you how much of that first period had already elapsed. Each mahadasha then divides into nine antardashas in the same lord order, each lasting the mahadasha’s length times the sub-lord’s share of 120 — and antardashas divide once more into pratyantardashas the same way. No lookup tables, just proportional arithmetic on one precisely measured angle.
The order never changes
The order of drivers never, ever changes. So once we know today’s driver, we know every next driver — with exact dates. Try it on your own birthday in the free calculator.
after Venus always comes Sun — at every level: mahadasha, antardasha, pratyantardasha
Take our published reference chart: 6 January 2001, 16:03 IST, Delhi. The Moon sits at 35.4385° sidereal — Taurus, in Krittika’s third pada. Krittika is Sun-ruled, so the Sun mahadasha was running at birth; it had begun on 25 January 1997.
Running the fixed order forward: Moon mahadasha 2003–2013, Mars 2013–2020, and Rahu’s 18-year mahadasha from 26 January 2020 to 25 January 2038 — every boundary computable to the second. Verify your own chain in the free calculator.
Why computations disagree between apps
Different apps give different dates because they measure the sky a little differently or count a ‘year’ differently. We write all our measuring rules down so anyone can check us.
Three choices move dasha dates between calculators: the ayanamsha (we use Lahiri, the Indian standard — a different ayanamsha shifts the Moon’s measured position and can shift boundaries by months), the year length (we use 365.2425 days; some software uses 360-day years, which drifts the far end of the cycle by years), and the birth-time handling (historical time-zone records matter). Our methodology page publishes every convention, and the engine is verified against an independent reference dataset.
What this does not claim
None of this tells the future for sure. It’s an old way of describing seasons of life — and we never promise weddings, money, or health.
A dasha is a traditional symbolic lens, not a scientifically validated forecast. No mahadasha guarantees marriage, money, illness or any event — and any reading that says otherwise is overclaiming. What a period can honestly offer is a theme to reflect against, which is how our 90-day reading uses it: every sentence cites the computed fact it rests on, and forbidden claims are rejected by a validator before you ever see them.
Keep reading
- What your current mahadasha means
- Each of the nine periods, in plain and honest language.
- Does birth time really matter?
- What a five-minute error changes — and what it doesn’t.
- Dasha × transit
- How the personal clock and the live sky combine.