What a synastry chart shows

A synastry chart lays one person’s birth chart over another’s and measures the angles between them. Where a planet in your chart touches a planet in theirs, something specific happens between you — ease, friction, fascination, obligation. The chart doesn’t rank a relationship as good or bad. It shows you the shape of it, and which parts ask for conscious attention rather than hope.

How to read the connections

Sun and Moon contacts show how recognized and how emotionally held each person feels in the bond. Venus and Mars contacts describe what actually pulls you together and how affection is expressed between you — not what you think you want from each other, but what the charts show you reaching for. Saturn contacts mark where the relationship asks for patience, commitment, or restraint — and where growth requires something more than goodwill. Chiron contacts show where the old wound surfaces between you, and what the bond is asking each person to understand about themselves. Node contacts carry a sense of weight beyond preference — the feeling that this meeting was not entirely accidental.

Questions readers ask

Do I need exact birth times?

Planet-to-planet aspects work without exact times. Houses and the Moon’s degree need a birth time to be reliable, so use one where you have it.

Which house system does this use?

Whole Sign houses, calculated with the Swiss Ephemeris.

Can I use it for family or friends?

Yes. Synastry describes any two-person contact, not only romance.

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