Why Is My Kundli Different on Different Websites? (An Honest Explanation)

If you've generated your birth chart on two different websites and noticed your Lagna (Ascendant) degree, Moon sign, or Nakshatra doesn't match, you're not imagining it – and neither site is necessarily "wrong." These differences come from legitimate choices in how a kundli is calculated, not from mistakes. This page explains, honestly, where the differences come from and exactly how we compute your chart.

The four reasons two kundlis disagree

Only the last two can move a planet across a boundary and change your reading meaningfully. The first two usually shift things by under a degree – which matters only when a planet was already sitting right at the edge of a sign or nakshatra.

1. Ayanamsa – the single biggest reason

Vedic astrology uses the sidereal zodiac (fixed to the stars), while the Western system uses the tropical zodiac (fixed to the seasons). The angle between them is called the ayanamsa, and it grows by about 50 arcseconds every year.

The catch: there is more than one accepted ayanamsa. Different schools use slightly different values.

Two sites can both be "correct" and still disagree by a degree or so simply because one uses Lahiri and the other uses Raman or KP. We use the Lahiri ayanamsa, the same standard the Indian government adopts for its official Panchang – you can see today's values on our Panchang page.

2. The ephemeris – where the planet data comes from

An ephemeris is the underlying table of planetary positions. Older almanacs used Vakya Ganita – traditional formulae based on mean motion. Modern tools use Drik Ganita – true astronomical positions that match where the planet actually is in the sky.

We use Drik Ganita, computing positions from VSOP87 (planets) and ELP2000 (Moon) ephemeris models – the same class of data professional software relies on. This is why our Moon's Nakshatra and your Vimshottari Dasha timing line up with what you'd observe astronomically, not with a simplified almanac.

3. Birth time and timezone – the one that's actually on you

This is where the largest differences usually creep in, and it has nothing to do with the astrology engine:

• The Ascendant moves ~1° every 4 minutes. A birth time that's off by even 10 minutes can shift your Lagna – and occasionally push it into the next sign.
• Historical timezone quirks. India standardised on IST in 1947; during 1942–1945 parts of India observed "War Time" (+1 hour). A birth in that window needs the right offset.
• City vs exact location. Coordinates for "Delhi" vs your actual birth hospital can differ by a few kilometres, nudging the Lagna slightly.

If two charts disagree a lot, check the birth time and timezone first – that's the usual culprit, not the ayanamsa. This is also why an exact birth time matters so much for matching; see why the exact birth time matters for how it flows through to your guna score.

4. House system

North Indian Vedic astrology traditionally uses the Whole Sign house system – the entire sign of the Ascendant is the 1st house. Some tools default to Placidus or other cusp-based systems, which can place a planet in a different house near a boundary. We use Whole Sign houses, the classical Vedic (Parashari) standard.

So which kundli is "correct"?

The honest answer: a chart is correct relative to the method it declares. There is no single universal kundli – there is a Lahiri/Drik-Ganita/Whole-Sign chart, a KP chart, a Raman chart, and so on. What you should look for is a tool that is transparent about its method and internally consistent, so your chart, your dasha, and your matching all rest on the same foundation.

Our method, stated plainly:

See your own chart

Our free Kundli matching tool computes both partners' charts on exactly this basis – real planetary positions, Lahiri ayanamsa, whole-sign houses – then gives you the full 36-guna Ashtakoot breakdown and Manglik check, with a plain-language explanation of every result. If a number ever looks surprising, you can ask why, right in the report.