Birth moon calculator
Enter your birthday to see the Moon exactly as it was the day you were born, your Moon sign, and when the Moon next returns to your birth phase.
In lunar astrology, the phase at your birth describes how you approach life, from the instinctive New Moon starter to the reflective Waning Crescent visionary.
Born in the dark of the moon, you meet life with fresh eyes. You tend to act on instinct, start things others have not imagined yet and feel most alive at the beginning of a project. Your lesson is trusting the seed before anyone else can see it grow.
The first sliver of light marks a soul that pushes forward against the pull of the past. You are determined, hopeful and good at turning a vague wish into the first concrete steps. Your lesson is not letting old doubts slow down new growth.
Half lit and still growing, the First Quarter moon gives you a natural talent for action under pressure. You build structures, take a stand and thrive on challenges. Your lesson is choosing battles wisely so your energy goes into what truly matters.
Born as the moon swells towards full, you are driven to improve, analyse and perfect. You ask "how can this be better?" and you are willing to do the work. Your lesson is accepting that progress, not perfection, is the goal.
With the Sun and Moon facing each other at your birth, you are aware of opposites: head and heart, self and others. Relationships are your mirror and you often see things with unusual clarity. Your lesson is finding balance rather than swinging between extremes.
Born as the full light begins to share itself, you are a natural communicator who wants to pass on what you have learned. Ideas, causes and stories move through you to others. Your lesson is listening as generously as you share.
The Last Quarter moon is a turning point, and you carry its spirit: you question what no longer works and quietly rebuild it. You are principled and often ahead of your time. Your lesson is letting go of the old without becoming rigid about the new.
Born in the last light before renewal, you sense endings and beginnings at once. You are intuitive, reflective and often feel drawn to the future or the invisible. Your lesson is honouring rest and trusting your inner knowing.
Enter your date of birth above. The calculator works out the angle between the Sun and the Moon at that moment and shows the phase, how much of the Moon was lit and how many days old the lunar cycle was. Adding your birth time and time zone makes the result exact.
Not for the phase: the Moon changes phase slowly, so the date is enough for almost everyone. Your Moon sign is different, because the Moon moves through a whole zodiac sign in about two and a half days. If it changed signs on your birthday, the calculator tells you and asks for the time.
Every 29.5 days the Moon returns to the same phase angle it had when you were born. Many people use this personal "lunar return" as a monthly moment to reflect and set intentions.
Moon positions are computed with the same astronomical model we use for exact full and new moon times, accurate to within about a minute for dates between 1800 and 2200.