How is my starting Dasha determined?

By the nakshatra your Moon occupied at the moment of birth. Each of the 27 nakshatras is ruled by one of the nine Dasha lords, and the fraction of that nakshatra already crossed tells you how much of the first Mahadasha had elapsed before you were born.

What is the difference between Mahadasha and Antardasha?

Mahadasha is the major period ruled by one planet, lasting from 6 to 20 years. Antardasha is a sub-period within it, ruled by each of the nine planets in turn and proportional to their share of the 120-year cycle. Mahadasha sets the theme, Antardasha shades it.

The tradition describes periods as easier or more demanding depending on the planet's condition in your chart, but it does not label any planet's period as simply bad. A difficult period is generally read as one requiring more effort and patience in the areas that planet governs.

Why do different sites show different Dasha dates for me?

Usually because of the ayanamsa, the ephemeris, or how the birth time zone was applied. Dasha uses the sidereal Lahiri ayanamsa with the Swiss Ephemeris and applies the correct historical time zone for your birth location.

Should I plan major decisions around my Dasha?

Use it for reflection, not as a decision rule. Dasha timing is a traditional interpretive framework, and it cannot account for your circumstances, obligations, or judgement. Treat it as one perspective among many, and never as financial, medical, or legal guidance.

Does Dasha show Pratyantardasha?

The timeline covers Mahadasha and Antardasha in the main view. Deeper subdivisions are progressively less useful without a very precise birth time, which is why the primary reading focuses on the first two levels.

Vimshottari Dasha Calculator - Free Mahadasha Timeline

How the 120-year cycle is built

Vimshottari assigns a fixed number of years to each of the nine grahas. The total is 120 years, which classical texts describe as a full human span. Your sequence does not start at the beginning of the cycle - it starts at the lord of the nakshatra your Moon occupied at birth, and the portion of that nakshatra already traversed determines how much of the first Mahadasha had already elapsed.

This is why the Moon's exact degree matters so much. Each nakshatra spans 13 degrees 20 minutes, and the Moon crosses that in roughly a day. A birth time off by an hour can shift your balance of Dasha at birth by months.

Ketu - 7 years
Venus - 20 years
Sun - 6 years
Moon - 10 years
Mars - 7 years
Rahu - 18 years
Jupiter - 16 years
Saturn - 19 years
Mercury - 17 years

Mahadasha, Antardasha, and the levels below

Each Mahadasha subdivides into nine Antardashas (also called Bhuktis), running in the same planetary order and proportional to each planet's share of the cycle. Antardashas subdivide again into Pratyantardashas, and the nesting can continue further.

In practice, most astrologers read the Mahadasha for the broad theme of a stretch of years and the Antardasha for the texture within it. A Saturn Mahadasha with a Venus Antardasha reads differently from the same Mahadasha with a Mars Antardasha. Dasha lays out the full nested timeline so you can see where you sit today and what is coming next.

How a Dasha period is actually interpreted

A planet's Dasha tends to activate the affairs of the houses it owns and occupies, coloured by its dignity, its aspects, and the company it keeps. A well-placed Jupiter running its Mahadasha reads very differently from a Jupiter that is combust or in a difficult house.

The tradition is clear that Dasha describes the timing and flavour of a period, not fixed events. Reading it as a calendar of guaranteed outcomes misses the point and tends to produce anxiety rather than insight. It works better as a way to notice which themes in your life are currently under the spotlight.

House lordship - which areas of life the Dasha lord governs in your chart
Placement - the house and sign the lord occupies
Dignity - exaltation, own sign, debilitation, combustion
Interaction with transits, including Gochara from the Moon

Reading Dasha alongside transits

Dasha tells you which planet has the floor; transits tell you what the sky is doing right now. Most experienced practitioners read them together - a transit that lines up with the running Dasha lord usually registers more strongly than one that does not.

Dasha shows your Gochara transits from the natal Moon on the same account, so you can hold both views at once without switching tools. If Sade Sati is running, it appears there too.

What Dasha gives you

The Vimshottari timeline is generated from your chart automatically - no manual nakshatra lookup, no balance-of-Dasha arithmetic.

Full Mahadasha sequence with exact start and end dates
Antardasha breakdown within each Mahadasha
Your current running period highlighted
The Yogini Dasha timeline in parallel, as a second timing lens
Dasha AI to ask why a period is read a certain way, with the placements it used shown

Balance of Dasha at birth

You are almost never born at the start of a Mahadasha. The Moon had already travelled some distance into its nakshatra by the time you arrived, and that fraction is subtracted from the first period. Someone born with the Moon at the very beginning of Ashwini gets a nearly full seven-year Ketu Mahadasha; someone born near the end of it gets only a few months.

That balance then propagates through the whole timeline. Every subsequent Mahadasha start date depends on it, which is why two people born on the same day in the same city can have noticeably different Dasha calendars, and why an approximate birth time produces an approximate timeline rather than a precise one.

Dasha computes the balance from the Moon's exact longitude rather than rounding to the nearest nakshatra, so the dates reflect the actual arithmetic of the system.

Balance is derived from the Moon's degree within its nakshatra
An imprecise birth time shifts every date in the sequence
Rectification is the traditional process for narrowing an uncertain time

Vimshottari Dasha, from your Moon nakshatra to today