Everyone asks for their date's sign eventually. This is the version that actually reads both charts — attraction, friction, and the part neither of you says out loud. No birth time needed. No signup.
Most "compatibility calculators" compare two Sun signs from a fixed grid — twelve by twelve, 144 canned answers, the same result for millions of people. This one computes both birth charts and measures the real angles between them: Moon to Moon, Venus to Mars, Saturn to Sun. That is called synastry, and it is why two Leo–Scorpio couples can score differently.
Moon to Moon is weighted highest. Not because it is fashionable, but because it decides how you two fight and how fast you recover — which outlasts attraction every time.
Because you do not know your date's birth time, and pretending otherwise would be worse than admitting it. Here is the honest version of what that costs you.
A birth time and city are needed for exactly two things: your rising sign and your houses. Both depend on which degree was climbing over the eastern horizon at that minute, seen from that spot on Earth. Move the birth an hour, or a thousand miles, and they change.
Everything this page compares — Sun, Moon, Venus, Mars, Mercury, Saturn — is a position in the sky, not a position on the ground. Two people born the same minute in Seoul and in Chicago have the same Venus. So the pair reading works from birthdays alone.
The one soft spot is the Moon, which moves about half a sign a day. Charts are computed at noon to keep that error small, and when the Moon crosses into a new sign that day, MOON tells you outright instead of quietly picking one.
Get your own full chart read → · All 12 signs · See a full sample reading