A field guide to the sky you were born under
Read a birth chart
like a language
Planets are the what, signs are the how, houses are the where, aspects are the conversations. Learn the grammar, cast your own chart, then compare it with someone else's.
Learn the symbols
Flash-card style reference for all 12 signs, 10 planets, 12 houses and 5 major aspects — with the keywords that make them stick.
Cast a real chart
Enter a birth date, time and place. Planetary positions are computed in your browser with real astronomical formulas — nothing leaves your device.
Compare two charts
Synastry made visible: a bi-wheel of both charts plus every cross-aspect, sorted and explained in plain language.
The grammar of a chart
Read any placement as a sentence: Planet (what) in Sign (how) in House (where).
- Find the Ascendant (rising sign) — the left edge of the wheel. It sets the houses and describes your outward style.
- Locate the Sun (core identity), Moon (emotional nature), and Ascendant — "the big three".
- For each planet, blend: planet's function + sign's style + house's life area.
- Check aspects — angles between planets — to see which parts of the psyche cooperate or clash.
Cast a birth chart
All calculation happens locally in your browser. Time and place set the Ascendant and houses — if birth time is unknown, use 12:00 and ignore houses.
Compare two charts
Synastry looks at the angles between one person's planets and another's. Harmonious angles flow; challenging angles create friction — and growth.