Page role
This page sets the Birth Chart standard: data, layers, answer, boundaries, archive, and premium path.
synthesis
Chart synthesis
Meaning comes not from one placement, but from repetitions, links, houses, aspects, and the user's question.
What matters
A birth chart should be precise with data and gentle in conclusions. It helps observe, not trap a person in a label.
Production layer
Reality Engine calculates planets, verified angles, and Placidus/Equal/Whole Sign, stores immutable calculation snapshots, and now separates exact-time, approximate-time, and unknown-time authority. Unknown time becomes an interval profile; a historical-local calendar remains fail-closed until an explicit conversion authority exists.