Our method
How Graha Darpan computes and reads a kundli
Astrology sites usually ask for trust. This page removes the need for it by stating exactly what we compute, with what settings, and what rules the reader is held to.
The method in one paragraph
Every chart is computed with the Swiss Ephemeris, the professional standard astronomical library, using the Lahiri (Chitrāpakṣa) ayanāṁśa, whole sign houses, and mean lunar nodes. Every computed degree and minute is printed on the chart. The AI Jyotishi is required to fetch those computed positions before answering and is forbidden to guess, and every article on this site states its numbers from the same engine.
The computation
- Ephemeris. Planetary positions come from the Swiss Ephemeris, which reproduces the reference ephemerides of NASA's Jet Propulsion Laboratory to sub arcsecond precision. The lagna moves about one degree every four minutes, which is why we treat your birth time as the most important input you give us.
- Zodiac. Sidereal, with the Lahiri ayanāṁśa, the reference adopted by India's Calendar Reform Committee and used by most Indian panchangs. On 10 July 2026 the Lahiri value is 24 degrees 13 minutes.
- Houses. Whole sign bhāvas, the oldest and most widely used system in Jyotiṣa. The rising sign is the first house, entire.
- Nodes. Rahu and Ketu are computed as mean nodes.
- Dashas. Vimshottari, seeded from the Moon's nakshatra and exact degree at birth, so period dates are computed rather than copied from tables.
- Matching. Kundli Milan computes the full Ashtakoota table from both charts, with Manglik and papa samya checks, and shows every kuta's points rather than only the total.
These settings are printed on every chart we cast. When another calculator disagrees with us, comparing settings resolves the difference in a minute, which is the way disagreements between honest calculators should end.
The rules the AI Jyotishi is held to
- It must fetch the computed chart before answering, and its answers cite the placements they rest on. Ask it why, and it names the degree.
- It may never guess a position, a dasha date, or a transit. What is not computed is not said.
- It reads timing as windows, never dates, because windows are what the method honestly supports.
- It treats remedies as tradition, not commerce. Nothing on this site sells a gemstone, a pooja, or a dosha removal.
- It declines what Jyotiṣa should decline. Guidance here is a tradition of reflection, not a substitute for medical, legal, or financial advice.
The editorial rules for our articles
- Sky data in our guides, eclipse timings, station degrees, ayanāṁśa values, is computed with our own engine, never copied from an almanac. Where we say Saturn stations at 20 degrees 31 minutes of Pisces, that number came out of the ephemeris.
- Eclipse observances follow the classical visibility rule. Where an eclipse is not visible, we say plainly that sutak does not apply, whatever that costs in page views.
- Comparison pages must state what the other product does better, or they do not ship.
- No fear is sold here. A dosha is described with its classical cancellations in the same breath.
Corrections
If any computed value on this site is wrong, we want to know more than we want to be right. Write to us through the contact page and we will check it against the ephemeris and correct it visibly.