Synastry chart calculator
Two charts on one wheel. Gold glyphs are person A, muted glyphs are person B. Aspects below are between the two charts, not within one.
Enter both charts, then calculate — the overlay wheel draws itself.
How synastry is calculated
Each person is calculated as a full natal chart. The wheel overlays both sets of planets; the table lists major aspects between the two charts using the same orbs as the natal aspectarian (8° conjunction/opposition, 6° square/trine, 4° sextile).