by birth date · without time or city
Compatibility by Birth Date — Nothing Else Required
A birth date carries more than a zodiac sign: it fixes the positions of the Moon, Venus, Mars and Mercury, the life path number and the lunar day of birth. This calculator reads all of it from two dates — no birth time, no city, no account.
Two birth dates — nothing else needed
What a single date of birth contains
The Sun sign is only the cover. On the day a person is born, the Moon marks their emotional language, Venus their way of loving, Mars their way of wanting, Mercury their way of thinking. The date also reduces to a life path number in numerology, and the phase of the Moon that day gives the lunar birthday — the inner tide a person was born on.
Comparing two dates across all of these gives a much rounder picture than any sign table. That is exactly what the meter above does in one step.
Why we don't ask for the city
Cities and timezones only matter for house-based astrology — rising signs and house overlays. Slow planets move less than a degree a day, so the date alone fixes them for any birthplace. The Moon moves faster; if you know the birth time, add it, and if not, noon keeps the error small and we say so openly in the result.