Book of Life · system

Natal Chart

Western Hellenistic astrology — Sun, Moon, planets at your birth

What it is

The position of Sun, Moon and 8 planets across 12 signs and 12 houses at birth describes character, relationships, calling.

Origin

Hellenistic astrology, c. 2nd century BCE Egypt. Codified by Ptolemy's Tetrabiblos (~150 CE).

Key practitioners

Ptolemy, William Lilly, Dane Rudhyar, Liz Greene, Robert Hand.

How it works inside Book of Life

You submit the inputs the system needs (most often a birth date; some need time and place, others a question). Our engine computes the result deterministically — same inputs always produce the same reading. The personalised commentary is then layered on top by our AI personalisation step, calibrated to the client's context. Single reading on this system costs 100 credits; bundled with the other systems as a full Book of Life costs 600 credits total (saving 600).

Sources and further reading

· Ptolemy — Tetrabiblos (trans. Robbins 1940 Loeb)
· Greene, L. (1976) — Saturn: A New Look at an Old Devil
· Hand, R. (1981) — Planets in Transit
· Wikipedia

FAQ

How long does a reading take?: Generation takes about 2 minutes from the moment you submit the form. The personalised AI commentary then runs in the background and is ready within ~5 minutes total.
What if I don't know the exact birth time?: You can mark "I don't know exact time" — the system will use noon as a fallback. The natal and Human Design readings will be slightly less precise, but the other systems are unaffected.
Can I buy just this system without the full book?: Yes. 100 credits = 1 deep reading on this system, delivered as a standalone mini-report with its own PDF and personal link.

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