two birth phases · transparent comparison · no score
Moon Phase Compatibility Calculator
Compare the exact Sun–Moon phase angles and Moon signs at two births. The result describes similar, complementary or dynamically different lunar rhythms without inventing a “soulmate percentage.”
Compare two birth phases
The viral Moon-phase trend, made honest
Overlaying two Moon images can make a pleasing circle, but geometry does not measure relationship quality. This calculator uses the actual phase-angle difference and explains the category. Similar angles can suggest a shared symbolic pace; opposite angles a complementary contrast; quarter turns a dynamic difference. None is automatically better.
Use noon when time is unknown, then compare morning and evening if a birth happened near a phase or sign boundary.