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Moon Sign Calculator

Your Moon sign is how you feel, what settles you and what you reach for when the day goes sideways. Enter your birth date and place; it takes about 30 seconds.

Birthday

Free, no sign-up. Worked out on your device and never sent anywhere.

When you don't need a time

The Moon spends two to two and a half days in each sign, so on many dates it stays put all day and your date and birthplace are enough. On the days it changes signs, the tool shows both signs, tells you the moment it changed, and asks for your birth time to pick the right one. It never guesses.

What a Moon sign covers

Your Moon sign is the sign the Moon was in when you were born. It covers emotional needs, instinct, comfort and habit: your first reaction before you've had time to think, and what makes a bad day better. A Capricorn Moon wants to fix the problem. A Gemini Moon wants to talk it through. It can sound nothing like your Sun sign, because your Sun is what you show and your Moon is what you need looked after.

If the tool asks for a time

Birth certificates and hospital records often have it, and so does whoever was there. Enter the clock time as it was written, not converted for daylight saving.

Questions

What if I don't know my birth time?

Often it doesn't matter. Tick the box and add your birthplace. If the Moon stayed in one sign all day, that's enough. If it changed signs, you'll see both and the moment it changed, which may be all you need if you know roughly when you were born.

Why does another site show a different Moon sign?

Check the birth time and time zone first, especially if the Moon changed signs on your birthday. A few hours can put you on the other side of the change.

What if the clocks changed on my birthday?

If the clocks went back and your time happened twice, the tool asks which one you mean. If your time fell in the hour skipped in spring, it tells you.

How is a Moon sign different from a Sun sign?

Your Sun sign is the identity you grow into. Your Moon sign is how you feel and what you need. The two often differ, and that's why you can feel more like your Moon at home than your Sun in public.

Planet positions from Astronomy Engine. Birthplaces from GeoNames (CC BY 4.0).