Evidence and reference

Research and Source Library

Short, readable source notes and reference pages behind the site's astronomy, calendar, constellation and cultural claims.

Use this library when you want to know: “What source supports that factual statement?” or “Which system is this date/coordinate using?”

Core reference pages

All 12 signs, standard dates, 30° sectors, elements, modalities, opposite signs and traditional rulers.

The geometry behind twelve equal signs and why sign sectors are not constellation boundaries.

Why generic date ranges are useful approximations rather than exact ingress timestamps.

Why equinox points shift relative to the background stars over long timescales.

2026–2028 tropical sign-change times with downloadable CSV and JSON.

NASA-supported context for Earth's orbital plane and the Sun's apparent path.

IAU context for modern constellation regions and why they differ from equal zodiac signs.

The astronomy of apparent retrograde motion.

Cultural-institution context for the repeating animal cycle and Lunar New Year.

CSV and JSON versions of the sign/date/degree/element/modality reference table, with field definitions and limitations.

Read Source Library and Editorial Method for the hierarchy we use and the distinction between evidence, history and astrological interpretation.

Ordinary astrological symbolism is labeled as interpretation rather than disguised as a scientific finding.