Synastry — Relationship Chart
Overlay two charts to see how two people interact. Person A is the inner wheel, Person B the outer; the lines are the inter-aspects between them.
How to use the Synastry
Synastry overlays two birth charts to reveal the chemistry between two people — which planets attract, support, or trigger one another.
Getting started
- Enter both people's birth data (time and place for each).
- The biwheel and grid show the inter-aspects between the two charts.
Reading your result
Sun–Moon and Venus–Mars contacts signal attraction; Saturn contacts add commitment or restriction; hard aspects show friction that can be growth or strain.
Astrologer's tip A relationship needs both easy and challenging aspects — pure harmony rarely lasts.