A mahadasha is a major planetary period in Vedic astrology: for a set number of years, one graha takes the lead and the matters it stands for in your chart come forward. The most widely used system, Vimshottari, divides a 120-year cycle among the nine grahas, and your place in it at birth is fixed by the Moon's nakshatra.
Dashas are the main timing tool of Parashari astrology. A birth chart shows what is promised; the dasha shows roughly when each promise has its turn. That is why two people with similar charts can have very different decades, and why an astrologer almost always asks "which dasha are you running?" before saying anything about the present.
The 120-year Vimshottari cycle
Vimshottari means "one hundred and twenty". Each graha receives a fixed number of years, and the periods always follow the same order: Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17. After Mercury the cycle returns to Ketu. The table on this page lists all nine with their nakshatras; each planet has its own page below.
Nobody lives through the whole 120 years from the start. You enter the cycle part-way through one period, and from then on each mahadasha runs its full length in turn. A long life usually sees six or seven of the nine.
Where your first dasha comes from
The zodiac is divided into 27 nakshatras, and each graha rules three of them. The lord of the nakshatra your Moon occupied at birth rules your first mahadasha. A Moon in Rohini, Hasta or Shravana means you were born in a Moon period; a Moon in Pushya, Anuradha or Uttara Bhadrapada, in a Saturn period.
You were not born at the beginning of that period. The Moon had already crossed part of its nakshatra, and the same share of the dasha is treated as already used up. What remains is the balance at birth. If the Moon had just entered the nakshatra, almost the whole period lies ahead; if it was near the end, only a little does. Our guide to Vimshottari dasha works through a real example, and the dasha calculator does the arithmetic for you.
Antardasha and pratyantar
Each mahadasha is divided into nine antardashas, also called bhuktis. They run in the same Vimshottari order, starting with the mahadasha lord itself: a Venus mahadasha opens with Venus–Venus, then Venus–Sun, Venus–Moon and so on, ending with Venus–Ketu. Each antardasha lasts in proportion to its own planet's years, so a Rahu antardasha is long and a Sun antardasha short.
The same rule divides each antardasha into nine pratyantar dashas, and those again into finer levels. The finer the level, the more exact the birth time has to be. Most readers work with the mahadasha for the chapter of life, the antardasha for its episodes, and the pratyantar only when the birth time is reliable.
How results are judged
A dasha has no fixed result of its own. The planet delivers what it stands for in your chart. Astrologers weigh, roughly in this order:
- Placement. The house the planet occupies from the lagna, and the sign.
- Lordship. The houses it rules for your lagna. A planet ruling a kendra and a trikona together is a yogakaraka: Saturn for Taurus and Libra lagna, Mars for Cancer and Leo, Venus for Capricorn and Aquarius. Its period is often among the most constructive of a life.
- Dignity and strength. Exalted, in its own sign, debilitated, or lifted by neecha-bhanga; its strength in the navamsa; combustion and retrogression.
- Association. The planets joined with it or aspecting it, and any yogas it takes part in.
- The antardasha lord. Its natural and temporary friendship with the mahadasha lord, and the houses the two occupy from each other. Two lords well placed from each other tend to cooperate; lords in the 6th and 8th from each other are traditionally said to pull in different directions.
- Transits. Gochar, especially of Saturn and Jupiter, is read on top of the dasha. A transit can bring a promised matter to a head, but it rarely gives what the dasha and the birth chart do not support.
Schools differ on details, such as how much weight to give Rahu and Ketu's dispositors, but they agree that the chart decides, not the name of the period.
Dasha sandhi: the junction between two periods
The meeting point of two mahadashas is called dasha sandhi. Tradition treats the last months of one period and the first months of the next as a transition, when the old themes wind down and the new ones have not yet settled. People often describe it as a change of season: a shift in priorities, work or surroundings. Astrologers differ on how long the sandhi lasts, and it is best read calmly, as a time to finish what the outgoing period started, not as something to fear.
Other dasha systems
Vimshottari is not the only system. Yogini dasha, a 36-year cycle of eight periods, is often used alongside it as a cross-check, and our kundli shows it on its own tab. Jaimini astrology uses Chara dasha, which runs by signs rather than planets. This section follows Vimshottari, the standard Parashari method.
The nine mahadashas
Each page covers what the period classically signifies, how placement changes it, all nine antardashas with their lengths, and common misreadings.
- Ketu mahadasha: 7 years of simplifying and turning inward.
- Venus mahadasha: 20 years of relationships, comfort and creative work.
- Sun mahadasha: 6 years of identity, authority and visibility.
- Moon mahadasha: 10 years of home, feeling and the public.
- Mars mahadasha: 7 years of effort, courage and property.
- Rahu mahadasha: 18 years of ambition and the unfamiliar.
- Jupiter mahadasha: 16 years of learning, growth and guidance.
- Saturn mahadasha: 19 years of work, structure and patience.
- Mercury mahadasha: 17 years of skill, trade and communication.
Find your current dasha
Enter your birth details in the dasha calculator to see your mahadasha, antardasha and pratyantar with exact dates, or make a free kundli to read them alongside your whole chart. The planets themselves are described on the grahas pages.