The Vimshottari dasha is a 120-year cycle divided among nine planets. Each planet rules one stretch of your life, called its Mahadasha. The planets always come in the same fixed order, and each gets a fixed number of years. What is personal is only where in that cycle you start.
The Nine Lords, Their Years and Their Order
The sequence is Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury — then it loops back to Ketu. The years add up to exactly 120.
| Dasha lord (in order) | Years | Birth nakshatras that start here |
|---|---|---|
| Ketu | 7 | Ashwini, Magha, Mula |
| Venus | 20 | Bharani, Purva Phalguni, Purva Ashadha |
| Sun | 6 | Krittika, Uttara Phalguni, Uttara Ashadha |
| Moon | 10 | Rohini, Hasta, Shravana |
| Mars | 7 | Mrigashira, Chitra, Dhanishta |
| Rahu | 18 | Ardra, Swati, Shatabhisha |
| Jupiter | 16 | Punarvasu, Vishakha, Purva Bhadrapada |
| Saturn | 19 | Pushya, Anuradha, Uttara Bhadrapada |
| Mercury | 17 | Ashlesha, Jyeshtha, Revati |
Each planet rules three nakshatras, spaced nine apart, which is why the table repeats the same pattern three times across the 27 nakshatras. Look up the nakshatra the Moon occupied at your birth and you have the planet whose period you were born into.
How Your Moon Sets the Starting Point
Nobody is born at the very beginning of a Mahadasha. You are born part-way through one, and the Moon's exact degree inside its nakshatra says how far. A nakshatra is 13°20' wide. If the Moon had crossed a quarter of it at birth, a quarter of that lord's period was already used up, and the remaining three-quarters is what you start with.
A worked example: suppose the Moon is in Pushya, whose lord is Saturn (19 years), and it has covered 40% of the nakshatra. Then 60% of Saturn's period remains: 0.60 × 19 = 11.4 years of Saturn Mahadasha left at birth. The next Mahadasha, Mercury, then begins at age 11.4 and runs its full 17 years, and so on down the fixed order.
This is why two people born on the same day can have completely different timelines. The Moon moves about 13° a day — roughly one nakshatra — so a few hours of difference in birth time can move the starting lord or shift every date after it.
Antardasha: Periods Within Periods
Each Mahadasha is subdivided into nine Antardashas (also called bhuktis), one for each planet, starting with the Mahadasha lord itself and then following the same fixed order. The length of each is proportional to the sub-planet's own years:
Antardasha length = (Mahadasha years × Antardasha years) ÷ 120, in years.
For Mercury inside Saturn: 19 × 17 ÷ 120 = 2.69 years, about 32 months. For Ketu inside Saturn: 19 × 7 ÷ 120 = 1.11 years, about 13 months. The same rule cuts each antardasha into Pratyantardashas, which is how a good timeline gets down to weeks.
Why this is useful
The Mahadasha sets the broad climate of a decade or two. The antardasha is where events tend to land, because a nine-month or three-year window is a scale at which life actually changes. Reading only the Mahadasha is like reading only the season; the antardasha is the month.
What Decides Whether a Dasha Goes Well
A common mistake is to treat a dasha as good or bad because of the planet's name. It is not. What a period delivers depends on the specific planet in your chart:
| Factor | What it changes |
|---|---|
| Houses it rules | Which areas of life the period is about (career, partnership, home) |
| House it sits in | Where the effects show up in daily life |
| Dignity and strength | How easily the planet delivers on what it promises |
| Aspects and conjunctions | What it is helped or complicated by |
| Current transits | What activates the period right now, especially Saturn and Jupiter |
Saturn's period can be the most productive stretch of a career for one person and a slow grind for another, because Saturn rules different houses in each chart. The planet name tells you the theme; the chart tells you the weather.
What a Dasha Can and Cannot Tell You
A dasha gives you when: exact start and end dates for every period, which no other part of the chart does. It does not give you a guaranteed event. What it gives is a window of likelihood: this is the period in which the planet carrying that area of life is in charge.
Three honest limits. First, birth time matters: roughly 2 to 5 days of shift in every dasha date per minute of error, so fifteen minutes can move the whole timeline by several weeks. Second, different software can disagree by days because of the year length and ayanamsa used, so treat a boundary as a transition rather than a switch. Third, no period is a verdict; every one has an end date, and the demanding ones are not exceptions.
The general rule and the missing piece: everything on this page can be learned from a table. What a table cannot give you is your Moon's degree, your balance at birth, and which house each planet rules for your ascendant. Those are what turn the 120-year template into your own dated timeline.
Life Timing Intelligence
See Your Own Dasha Timeline
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Frequently Asked Questions
What is the Vimshottari dasha?
The Vimshottari dasha is the most widely used timing system in Vedic astrology. It divides a 120-year cycle among nine planets, each ruling one Mahadasha of fixed length, in the fixed order Ketu, Venus, Sun, Moon, Mars, Rahu, Jupiter, Saturn, Mercury. Your personal timeline is that cycle entered at the point set by the Moon at your birth.
How do I find out which dasha I am running?
You need your exact birth date, time and place. The Moon's nakshatra at birth gives your starting lord, the Moon's degree within it gives the balance of that first period, and the fixed order and years give every period after it. A dasha calculator does this arithmetic and returns exact dates; doing it by hand is possible but needs an accurate Moon position.
What are Mahadasha, Antardasha and Pratyantardasha?
They are three nested levels of the same system. A Mahadasha is the major period of one planet, lasting 6 to 20 years. Each is divided into nine Antardashas, and each Antardasha into nine Pratyantardashas. Every sub-period is proportional to the sub-planet's years, so the same formula, years times years divided by 120, works at each level.
How long is each Mahadasha?
Ketu 7 years, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17, totalling 120. Because you are born part-way through one of them, your first Mahadasha is only the remaining part, and the cycle will not usually run its full 120 years in a lifetime.
Is one dasha lord good and another bad?
No. A planet's name does not decide the quality of its period. What matters is which houses it rules for your ascendant, where it sits, how strong it is, and what is aspecting it. The same Saturn period can be productive in one chart and demanding in another. Every period also has an exact end date.
Can a dasha predict an exact event date?
No. A dasha gives a window in which the planet carrying a subject is in charge, with exact boundaries, but whether and when an event lands inside the window depends on the chart and on transits. It is best read as likelihood and timing, not as a guarantee.
How much does birth time affect my dasha dates?
Quite a lot. The Moon moves about half an arcminute per minute of time, which shifts every dasha date by roughly 2 to 5 days per minute of birth-time error depending on the starting lord. A 15-minute error can move the entire timeline by several weeks, and a wrong birth date can move it by years.
Why do different apps show slightly different dasha dates?
Because of two choices: the length of the year used to convert dasha years to days, and the ayanamsa, the offset between the tropical and sidereal zodiac that fixes the Moon's position. Small differences in either shift boundaries by days. They agree on the order and the lengths; only the exact day varies.