Synastry

Cocoaster

Calculate a dual chart for synastry from two birth charts.

Choose from western astrology, Four Pillars, and tarot depending on what you want to understand.

COMPATIBILITY GUIDE

Read Compatibility from Two Birth Charts

Synastry is a Western astrology method that overlays two horoscope charts to read relationship dynamics. Birth dates calculate planetary positions, while birth time and place add house overlays.

Useful beyond romance

Compatibility work can describe romantic, family, friendship, and work relationships by separating attraction points from areas of friction.

Read aspects and houses together

Compare how each person's Sun, Moon, Venus, Mars, and other planets aspect each other, then add house overlays when birth time and place are known.

FAQ

Can compatibility be read from birth dates?
Yes. Birth dates can calculate the relationship between two sets of planetary positions. Birth time and place add houses for a more detailed synastry reading.
What does synastry compare?
Synastry overlays two horoscope charts and compares inter-chart aspects and house overlays to describe relationship dynamics.
Do difficult aspects mean bad compatibility?
No. Tense aspects can describe friction, attraction, or growth themes rather than a simple good-or-bad verdict.