Put in your birth date. Anything from 1900 to 2100. Rise and set times use the city chosen on the left.
What a birth moon actually tells you
Astronomically, not a great deal — the moon was in the same phase for everyone alive that day, anywhere in the world. A full moon is full at one instant globally. So a birth phase is shared with roughly a twenty-ninth of everyone born that year, which is a lot of people.
That is not really the point of looking it up. People want to know because it is a fact about the sky on a day that matters to them, in the same way as knowing what day of the week it was. It is a small, true, specific thing, and we would rather give you the accurate version than dress it up.
Phase and sign are different questions
The phase is how much of the disc was lit — new, crescent, quarter, gibbous, full. The sign is which constellation of the zodiac the moon was passing through, which changes every two and a half days or so. Both are shown above. In astrology it is usually the sign people mean by "moon sign", not the phase.
Why the time matters for the sign but not the phase
The moon moves through a sign in about two and a half days, so a birth near a boundary can fall either side depending on the hour. The phase changes much more slowly, so a date is enough. If you were born close to a sign change and want it settled, you need a birth time.
If your date shows no moonrise
That is real, not an error. The moon rises roughly fifty minutes later each day, so about once a month a rise or a set skips a calendar day entirely. Everything here is computed from the moon's actual position, which means a missing entry is a genuinely missing event rather than a gap in the data.