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Antardasha Calculator | Vimshottari Bhukti Periods

The Antardasha Calculator locates a birth moment in the 120-year Vimshottari dasha cycle: it computes the Moon's nakshatra at birth to find the starting Mahadasha lord and balance, then walks the nine lords' fixed sequences (Mahadasha years multiplied and subdivided proportionally) to report every Mahadasha and Antardasha (bhukti) span up to the present and decades ahead.

Last updated: September 2026 · Free · No sign-up required

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Results

Enter values above and click Calculate to see your result instantly.

Quick reference

Vimshottari Mahadasha lengths:

LordYearsLordYears
Ketu7Rahu18
Venus20Jupiter16
Sun6Saturn19
Moon10Mercury17
Mars7

public Location matters

Tithi and nakshatra boundaries depend on where you are — enter your city's coordinates for precise results.

schedule Ayanamsa

Calculations use the Lahiri (Chitrapaksha) ayanamsa, the standard for Vedic charts.

menu_book Panchang basis

Results follow drik-panchang style astronomical computation, not printed-table approximation.

school Traditions differ

Some regions use Surya Siddhanta conventions; where traditions conflict, your family panchang wins.

lightbulb A real example — Moon in Rohini at birth

Birth with Moon in Rohini nakshatra, 40% into the nakshatra.

Result: Vimshottari starts with Venus (Rohini's lord): ~12 years of Venus Mahadasha remain, opening with a Venus–Venus antardasha.

What this means: Dasha runs against the nakshatra lord sequence — compare with the Vimshottari calculator for your full 120-year map.

Formula & methodology

Formula: Tithi = ⌊(Moon−Sun elongation) ÷ 12°⌋; Nakshatra = ⌊Moon longitude ÷ 13°20'⌋; Vimshottari lord sequence Ketu→Venus→Sun→Moon→Mars→Rahu→Jupiter→Saturn→Mercury

How the Vedic calculation works

All Hindu calculators on CalcaTools share one astronomical runtime: Julian-day conversion, mean planetary longitudes, Lahiri ayanamsa, then derivation of tithi (Moon−Sun elongation ÷ 12°), nakshatra (Moon longitude ÷ 13°20'), rashi (Moon sign), and the Vimshottari dasha sequence (Ketu 7, Venus 20, Sun 6, Moon 10, Mars 7, Rahu 18, Jupiter 16, Saturn 19, Mercury 17 years) anchored at the birth nakshatra's lord.

Festival dates use tabulated panchang data; muhurat windows use sunrise/sunset plus planetary day-lord hours. Default location is Delhi (28.61°N, 77.21°E, IST) unless you enter coordinates — a birth 500 km west shifts nakshatra boundaries in edge cases, so exact coordinates matter for precision work.

Frequently asked questions

What is Antardasha in Vedic astrology?
The sub-period within a Mahadasha. Each Mahadasha is subdivided proportionally among all nine planetary lords — Venus's 20-year Mahadasha opens with a 3-year-4-month Venus Antardasha, then Sun, Moon and so on.
How is Antardasha calculated?
From the Moon's nakshatra at birth: the ruling lord's remaining Mahadasha balance is computed, then Antardashas follow the fixed proportional sequence within each Mahadasha.
Can Antardasha override the Mahadasha?
The Antardasha colours the results — a benefic bhukti inside a difficult Mahadasha often delivers that period's best events, and vice versa.
Why do dasha dates vary between software?
Small differences in ayanamsa, Moon longitude or birth time shift boundaries by days-to-weeks; near boundaries, birth-time accuracy dominates.

Explore the full Hindu & Vedic toolkit

Every CalcaTools Hindu calculator — kundali and birth charts, planetary dashas, doshas and remedies, panchang and muhurat timings, festival dates, and vastu — computed with the same Lahiri-ayanamsa astronomy engine validated against published ephemerides.

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