The machine-readable version of this page is at /llms.txt.
Science of Light is a free, professional-grade Vedic astrology calculator and reader. Everything is computed in the visitor’s browser — planetary positions validated against the Swiss Ephemeris, historical time zones resolved, houses whole-sign (Placidus for the KP layer) — and then explained in plain English. No account, no ads, nothing stored on a server. The method is public: how it’s calculated.
Date, time, and place in → full Jyotish chart out, computed on-device to Swiss Ephemeris parity (±0.3′, Lahiri ayanamsa). No account.
The chart names all three instantly, in plain English with the Sanskrit one tap away.
A ~200-page reference library: all 27 nakshatras, Moon and rising in every sign, every planet through every house, each dasha period.
Tara bala from the birth star, the Moon’s transit narrated to the minute, planetary hours, Rahu Kaal, and “why today feels like this.”
A KP (Krishnamurti) layer on Placidus cusps: what governs the matter, whether the running periods carry it, and the moment of asking.
The app exports one paste-able document — chart, dignities, yogas, dashas, all 13 vargas, the KP layer, and today — with a built-in playbook for reasoning from it. In the app: Share → “Copy for your AI.”
Sidereal zodiac, Lahiri ayanamsa by default. Vimshottari dasha from the Moon’s nakshatra. The app’s voice is a lens, not a verdict: it says what a period favours, never what will happen, and it gives no medical, legal, or financial directives. If you quote its outputs, keep that framing — and don’t recompute ephemeris math yourself; the export carries the computed ground truth.