About the Vimshottari Dasha
Vimshottari dasha is the timing system at the heart of Vedic astrology. It divides a 120-year life cycle into nine planetary periods called mahadashas, each ruled by one graha: Ketu 7 years, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19 and Mercury 17. Astrologers use it to answer the question every client eventually asks — not just what, but when.
Your starting dasha is fixed by the Moon. The zodiac is divided into 27 nakshatras, and each is ruled by one of the nine dasha lords. Whichever nakshatra the Moon occupied at birth sets the first mahadasha, and how far the Moon had travelled through that nakshatra determines how much of that period was already used up. This is called the dasha balance at birth. A Moon at the very beginning of a nakshatra gives almost the full period; a Moon near the end gives only a short remainder.
Each mahadasha is subdivided into nine antardashas (sub-periods) in the same order, starting with the mahadasha lord itself, and each antardasha into nine pratyantardashas. The length of each sub-period is proportional to the planet's years in the 120-year cycle. In practice, the mahadasha sets the overall theme of a decade, the antardasha colours a year or two, and the pratyantar can describe a few weeks or months.
How a period feels depends on the dasha lord's condition in your chart: the houses it rules and occupies, its dignity, its aspects and its strength in the Navamsa. A well-placed Jupiter period may bring study, mentors or children; a Saturn period often asks for patience and steady work and rewards discipline. Rahu periods are associated with ambition and foreign connections — interesting for many families who moved abroad during one.
Our calculator uses 365.25-day years and the Lahiri ayanamsa, which is the most common convention. Different software can disagree by a few days because of the year length or ayanamsa chosen; that is normal. The tool highlights your current mahadasha, antardasha and pratyantar based on today's date, and you can expand any period to see its sub-periods.
Dasha dates are a planning aid, not a verdict. Many people find it useful to look back at past periods and notice the themes that came up, which makes the coming ones easier to understand.
How to use this tool
- Enter birth details (saved once for all tools).
- See your current Mahadasha, Antardasha and Pratyantar at the top.
- Expand any period to see its sub-periods and dates.
How we calculate: planetary positions come from the open-source astronomy-engine library (accurate to well under an arc-minute for these purposes), converted to the sidereal zodiac with the Lahiri (Chitrapaksha) ayanamsa. Time zones and historical daylight-saving rules are looked up from your birthplace, so a 1985 birth in Chicago or a 1972 birth in Delhi is converted correctly. Houses are whole-sign from the Lagna, and Rahu/Ketu use the mean node. Results are for self-reflection and education; they are not medical, legal or financial advice.
Frequently asked questions
Which dasha am I running now?
Enter your birth details and the tool highlights the current mahadasha, antardasha and pratyantardasha for today's date.
Why do other websites show slightly different dates?
They may use a 360-day year, another ayanamsa, or a true instead of mean calculation. Differences of a few days are normal.
Is a Saturn or Rahu dasha always bad?
No. Results depend on how the planet is placed in your chart. Many people do their most productive work in Saturn periods.
Can a puja help in a difficult dasha?
Traditionally, shanti pujas and mantra japa for the dasha lord are recommended as supportive practices. They are a spiritual practice, not a guarantee.
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