Your Moon sign reflects your emotional nature and instincts. Unlike the Sun sign, it changes roughly every two to three days, so an accurate birth time and location matter for a reliable result.
What Is My Moon Sign?
The Moon moves through the entire zodiac in about a month, spending only two to three days in each sign. Your Moon sign describes your inner emotional world, separate from the outward identity of your Sun sign.
Why Birth Time and Location Matter
Because the Moon moves quickly, knowing your birth time and converting it correctly to UTC (accounting for your birthplace’s historical time zone rules) is important for an accurate Moon sign, particularly near a sign change.
How It Works
We geocode your birthplace, resolve the correct historical time zone, convert your local birth time to UTC, then calculate the Moon’s ecliptic longitude at that exact moment using the Astronomy Engine library.
FAQ
What if I don’t know my exact birth time?
You can check the box above and we’ll estimate using midday. This is less reliable if your birth date is near a Moon sign change.
How is this different from my Sun sign?
Your Sun sign only needs your birth date. Your Moon sign needs your birth time and place too, since it changes so much faster.
Want your full chart? Try the Sun Moon Rising Calculator or check your Rising sign.