How to Find Your Moon Sign Without a Birth Time

You can find your moon sign from your birth date alone whenever the Moon stayed in one sign for that whole day, which is true for more than half of all dates. If the Moon changed sign on your birth day, you have two possible moon signs, and the time of birth decides between them.

Moon sign vs sun sign

The zodiac sign you know from your birthday is your sun sign: where the Sun was when you were born. The Sun spends about a month in each sign. Your moon sign is where the Moon was, and the Moon moves through a sign in about 2.3 days. So if you are an Aquarius and your moon sign comes out as Cancer, nothing is wrong. They measure two different things.

Why the date is usually enough

The Moon changes sign about 13 times a month, so roughly 44 out of every 100 days contain a change and about 56 do not. On a day without a change, every hour of that day gives the same moon sign, and your birth time does not matter.

If the Moon changed sign on your birthday

1. Look up the ingress time for your birth date: the minute the Moon entered the next sign.
2. If you were born before that time, your moon sign is the first sign. If after, it is the next one.
3. If you only know roughly when you were born ("in the morning", "late at night"), that is often enough when the change happened far from your birth hour.
4. If you know nothing about the time, keep both candidates in mind. Some people read both descriptions and pick the one that fits.

Two details that change the answer

• Use your solar (Gregorian) birthday. If your family celebrates a lunar calendar birthday, convert it to the Gregorian date first.
• Mind the time zone. The ingress happens at one instant worldwide, but the clock time differs by zone. If you were born in a different time zone from the one you are in now, convert your birth time before comparing.

Find it in the app

In Signtide's My Moon tab, enter a birth date and, if you know it, the time. You get the birth moon sign, its element and the phase that day. If the Moon changed sign that day and the time is empty, Signtide shows both options, before and after the change. Signtide uses the Gregorian date and reads the time in your phone's current time zone, so convert first if you were born elsewhere. You can save yourself, family and friends on your phone and share a birth moon card.

Moon sign times are astronomical calculations. What a sign is said to mean for your day comes from astrology, a tradition for reflection, not a scientific prediction.

Why is my moon sign not my zodiac sign?

Your usual zodiac sign is your sun sign, where the Sun was at birth. Your moon sign is where the Moon was. The Moon changes sign every two to two and a half days, so the two usually differ.

Can I find my moon sign with only my birth date?

Yes, on more than half of all dates. If the Moon stayed in one sign for the whole day, the date is enough. If it changed sign that day, you have two candidates.

Is there an app that calculates my birth moon sign?

Signtide's My Moon tab finds the birth moon sign from a birth date, with an optional time. If the Moon changed sign that day and you leave the time empty, it shows both possible signs.