Synastry

SYNASTRY

Two birth charts

Enter each person's birth date, local time, time zone, and birth coordinates. You'll get two whole-sign wheels and a ranked aspect list from the same scoring logic as demo. Use Saved people to store charts in this browser.

Saved people

After each successful "Show synastry" run, both people are saved here automatically (identical birth data updates the same row). Clearing site data removes everything.

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Person A

Local calendar date in their time zone. (Format follows your locale.)

24-hour local time (HH:mm).

Advanced fields

e.g. America/New_York. Used with date and time to get an exact UTC instant.

City, neighborhood, or hospital. Blur or click Look up to fill coordinates.

Person B

Local calendar date in their time zone. (Format follows your locale.)

24-hour local time (HH:mm).

Advanced fields

e.g. Europe/London. Used with date and time to get an exact UTC instant.

City or address — tab away from this field or use Look up to fill coordinates.

Positions use Astronomy Engine (geocentric ecliptic of date). Houses are whole sign from the calculated ascendant — not a full Swiss Ephemeris / Placidus stack yet.