Skip to content

precision

Birth data

Birth date, time, and place are chart raw material. No birth time means no fake precision.

Required fields

Date and timezone are required for any computable profile; place/coordinates are required for precise angular geometry. Exact time may yield ASC/MC and houses; approximate time propagates a declared +/- range; unknown time spans the full recorded local date without inserting noon.

  • Birth date
  • Birth time
  • Birth place
  • Profile name

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.