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Dasha Calculator
Find the planetary period you're in right now — your mahadasha, antardasha, and pratyantar dasha — plus your full 120-year Vimshottari timeline. Free, built from your exact birth chart.
Lahiri ayanamsa · Swiss-grade ephemeris · Classical Parashari rules
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What is a dasha?
A dasha is a planetary time period — the timing engine of Vedic astrology. The word literally means “period” in Sanskrit. While Western astrology leans almost entirely on transits to predict timing, Vedic astrology uses a parallel system: dashas tell you which planet's themes are activated in your life right now, regardless of where the planets are in the sky today.
Several dasha systems exist — Vimshottari, Yogini, Ashtottari, Char — but Vimshottari is the most widely-used and best-documented. It's what serious Vedic astrologers turn to first. Yuktai's calculator computes Vimshottari.
Vimshottari Dasha — the standard system
The full Vimshottari cycle is 120 years. It cycles through the 9 Vedic planets in a fixed order — Ketu 7 yrs · Venus 20 yrs · Sun 6 yrs · Moon 10 yrs · Mars 7 yrs · Rahu 18 yrs · Jupiter 16 yrs · Saturn 19 yrs · Mercury 17 yrs — totalling exactly 120 years.
Your personal sequence is anchored to the nakshatra (one of 27 lunar mansions) your Moon was in at the moment you were born. That nakshatra's ruling planet opens your sequence, and the rest follow in fixed order. For the full theory, see What is Vimshottari Dasha?
Maha, Antar, Pratyantar — the nesting layers
The mahadasha is the long brushstroke — 6 to 20 years of one planet's themes coloring your life. Inside the mahadasha sits the antardasha (also called bhukti), a sub-period usually a couple of years long, that colors the active chapter. Inside the antardasha sits the pratyantar dasha — the fine layer, often just weeks or months, that gives you the “weather this month” read.
Read them together and you get three useful timeframes: the multi-year arc, the current season inside it, and what is alive right now. That's the whole point of the dasha system.
How to read your current dasha
The most important rule in dasha analysis: big events fire when the mahadasha, the antardasha, AND current planetary transits all point in the same direction. This convergence principle is why two people in the same mahadasha can have very different years — the antardasha and transits modulate everything.
For a worked example, the Saturn Mahadasha guide walks through what a 19-year Saturn dasha actually looks like at each phase.
Other dasha systems
Vimshottari is the most common, but it isn't the only system. Yogini dasha is a parallel 8-period system totalling 36 years, used alongside Vimshottari in some traditions. Ashtottari dasha uses a 108-year cycle and is sometimes preferred for natives born during the dark half of the lunar month. Char dasha, used in Jaimini astrology, is sign-based rather than planet-based.
Yogini Dasha calculator: coming soon to Yuktai.
Frequently Asked Questions
What is a dasha in Vedic astrology?
A dasha is a planetary time period — the timing engine of Vedic astrology. Unlike Western astrology, which leans on transits, Vedic uses dashas to predict WHEN events activate, not just what your chart contains. Each dasha is ruled by a planet whose nature shapes those years.
How is my dasha calculated from my date of birth?
The Vimshottari dasha sequence is anchored to the nakshatra (one of 27 lunar mansions) your Moon was in at the moment you were born. The nakshatra's ruling planet starts your sequence; how far the Moon had traveled into that nakshatra tells us how much of the first period had already elapsed at birth.
What is the difference between mahadasha, antardasha, and pratyantar dasha?
Mahadasha is the long chapter — 6 to 20 years per planet. Antardasha is the season within that chapter, usually a couple of years. Pratyantar dasha is the fine weather, often weeks to months. Reading them together tells you the multi-year arc, the current colour, and what is active this month.
What is dasha bhukti?
Bhukti is another name for antardasha — the sub-period inside a mahadasha. So "dasha bhukti" usually means "mahadasha + antardasha together," the two-level summary of where you are right now.
Why does birth time matter for dasha calculation?
The Moon moves through one nakshatra in about 24 hours. A wrong birth time can shift your starting nakshatra — and that shifts your entire 120-year timeline by years. For accurate dasha results, use the most precise birth time you have.
What is the difference between Vimshottari and Yogini dasha?
Vimshottari is a 120-year cycle through 9 planets and is the standard in most Vedic traditions. Yogini dasha is a parallel system with 8 periods totalling 36 years, used alongside Vimshottari in some schools. Yuktai's calculator uses Vimshottari — a Yogini Dasha calculator is on the roadmap.
Can a difficult mahadasha be made better?
Dashas are not curses. A demanding mahadasha — Saturn, Rahu, sometimes Ketu — is asking for specific work. Awareness is the actual lever. Knowing what the period rewards and what it punishes lets you align with it instead of fighting it. The dasha sets the weather; you choose the clothes.
How accurate is Yuktai's dasha calculator?
We use astronomy-engine for planetary positions (sub-arcsecond accuracy), Lahiri ayanamsa (the standard Vedic offset), and classical Parashari rules for the dasha sequence. Same precision a serious astrologer would use — delivered in seconds.
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