Free tool

What Moon were you born under?

Right now the Moon is 39% lit (first quarter), in front of the stars of Sagittarius. Enter your birthday to see the Moon on the night you were born, with the real stars behind it.

The eight Moons you can be born under

The Moon goes from new to full and back in about 29.5 days. Astrologers read each part of that cycle as a temperament.

New Moon
Sun and Moon together, a dark sky
Born at the New Moon, when the Sun and Moon line up, you tend to act on instinct and start before the plan is finished. Your feelings and your goals usually point the same way, which makes you direct and hard to talk out of things.
Waxing crescent
A thin new Moon, growing
Born under a thin crescent, you often feel the pull of something new that hasn't proved itself yet. You tend to push past old habits and other people's expectations to make room for it, which takes more nerve than it looks.
First quarter
Half lit and growing
Born at the first quarter, when the Moon is half lit and growing, you tend to like a challenge and act under pressure. You'd rather build something and fix it on the way than wait until it's perfect.
Waxing gibbous
Nearly full, still growing
Born under a nearly full Moon, you tend to refine, question and improve. You notice what's almost right and want to make it right, which makes you a natural editor of plans, your own included.
Full Moon
Sun and Moon opposite, fully lit
Born at the Full Moon, with the Sun and Moon on opposite sides of the sky, you tend to see both sides of things and feel the pull between them. Relationships matter a lot to you, and you often understand yourself best through other people.
Waning gibbous
Just past full, shrinking
Born as the Full Moon began to fade, you tend to want to pass on what you've learned. People come to you for explanations, and you often find meaning by sharing it.
Last quarter
Half lit and shrinking
Born at the last quarter, when the Moon is half lit and shrinking, you tend to question what everyone else takes for granted. You're good at letting go of what no longer works, even when it's comfortable.
Waning crescent
A last thin crescent before the New Moon
Born under the last thin crescent, just before the New Moon, you tend to be reflective and a little ahead of your time. You often sense how things will end before they start, and you need quiet to recharge.

How the picture is made

The Moon's position, phase and the Sun's direction come from Astronomy Engine, the same ephemeris behind every Skyprint chart. The stars are the real ones, to scale, from the Hipparcos catalog down to the faintest you can see without a telescope, with the official IAU constellation figures. The Moon is drawn from NASA's Lunar Reconnaissance Orbiter map, lit from where the Sun really was, and shown larger than life so you can see its shape.

Questions

What phase was the Moon when I was born?

Enter your birthday above. You get the phase, how much of the Moon was lit, the constellation it was in front of, and the New and Full Moons around your birthday. Adding a birth time makes it exact; without one it's drawn for noon, which is close, because the phase changes only a little in a day.

Is the Moon phase the same everywhere on Earth?

Yes. Everyone sees the same phase at the same moment. The local date can differ by time zone, and people south of the equator see the Moon the other way up from this picture.

Is my Moon phase the same as my Moon sign?

No. Your Moon sign is the zodiac sign the Moon was in. The phase is how much of it was lit, which depends on the angle between the Sun and the Moon. A Full Moon can happen in any sign.

Why does the picture name a different constellation from my Moon sign?

Astrology measures the signs from the spring equinox. Earth's axis slowly wobbles, so over about 2,000 years the equinox has drifted against the stars, and the stars behind a sign are usually the constellation before it. Both are real: the sign is a season, the constellation is the view.