About & method
Thunder & Lightning reads the connection between two people through six old systems at once — and tells you, in plain language, where you meet, where you rub, and where you make something neither could alone.
What it actually does
You give it two births — a name, a moment, a place. From that it computes each person's chart in six traditions and then compares them: Vedic Jyotiṣa (the Moons, the eight-fold Aṣṭakūṭa score, the daśā years), Human Design and the Gene Keys (the gates, channels and spheres), Western astrology (the planets and their aspects), Chinese BaZi (the Four Pillars), and Galactic astrology (the fixed stars each chart touches).
How much of it is “AI”?
The compatibility itself is not written by an AI. Every number — every planet position, every score, every channel — is computed exactly from the sky at each birth, using the Swiss Ephemeris. It is deterministic: the same two births always give the same chart. The AI does one job only — it takes those computed facts and writes them up in warm, readable prose. If you'd rather, you can skip the AI entirely and take the raw computed prompt to any tool you like.
The conventions, for the curious
Sidereal zodiac · Lahiri (Chitrapakṣa) ayanāṃśa · Whole-Sign houses · Vimśottarī daśā · mean nodes · precession-correct fixed stars. All six systems are read from the same birth moment.
A gentle note
This is an instrument for reflection and self-understanding — a mirror, not a verdict. None of these systems is “the truth”; each is a different lens. Take what is useful, leave the rest, and hold any single reading lightly. It is not medical, psychological, legal or financial advice, and it does not predict the future.
Your data
This is an open, public project: the names and birth details you enter, and the reports you make, are published for others in the network to see — so only enter someone else's details with their permission. You can always mark a report private so that only you can see it.
Made with care. Everything exists only in relation.
Thunder & Lightning is for self-reflection, curiosity and joy — it is not medical, psychological, legal or financial advice.