Moon sign calculator
Find the zodiac sign the Moon was in when you were born. The Moon changes sign about every two and a half days, so the birth time matters when it changed that day.
What this sign means
The Moon sign is the zodiac sign the Moon occupied at the moment you were born. Traditional books treat it as the emotional weather of a chart: what feels like comfort, and how fast a mood moves. The Moon changes sign about every two and a half days, so many people born in the same week do not share it. The notes below are that tradition. They are not a reading of your private life.
Moon sign in each sign
Aries
The Moon in Aries is described as feelings that arrive fast and show on the face. Comfort, in this note, looks like room to act. The Moon leaves Aries in about two and a half days, so the birthday is not a month-long placement. Aries sign
Taurus
The Moon in Taurus is the textbook need for calm routines and something pleasant to hand. The tradition says this Moon resists being hurried. Check the time if the result says the Moon changed sign that day. Taurus sign
Gemini
The Moon in Gemini is described as a mood that settles by talking, reading, or changing the subject. The twins are the picture. It is a two-day visit of the Moon, not a permanent label. Gemini sign
Cancer
The Moon in Cancer is the Moon in its own sign. Books talk about home, memory, and feelings close to the surface. That is the inherited caption for the placement the calculator reports. Cancer sign
Leo
The Moon in Leo is described as a need to be included and a droop when the warmth is missing. The lion is the symbol. The Moon calculator, not the Sun sign dates, is what names this. Leo sign
Virgo
The Moon in Virgo is the tradition's mood that settles when the task is clear and the details line up. Worry, in this picture, is the same habit turned up. It is folklore beside a lunar longitude. Virgo sign
Libra
The Moon in Libra is described as feelings that want an even tone in the room. Comfort is a balanced company, in the old note. A changeover day still needs the birth time. Libra sign
Scorpio
The Moon in Scorpio is the textbook private feeling, with trust given slowly. The tradition says comfort is honesty rather than cheer. The Moon moves on in a couple of days. Scorpio sign
Sagittarius
The Moon in Sagittarius is described as a mood that lifts when there is a horizon or a reason to leave the usual room. The archer is the picture. It is not a promise of a journey. Sagittarius sign
Capricorn
The Moon in Capricorn is the old note about feelings kept useful and a comfort that looks like a plan already working. The sea goat is the drawing. The date usually settles the sign. Capricorn sign
Aquarius
The Moon in Aquarius is described as feelings that cool off when they can be thought about, and that dislike being crowded. The water bearer is the symbol. It is still a timed position. Aquarius sign
Pisces
The Moon in Pisces is the tradition's porous mood, taking in the room, with comfort in quiet or music. The two fish are the picture. Calculate it. Do not guess it from the Sun sign. Pisces sign
How it is calculated
Astronomy Engine gives the Moon's ecliptic longitude for the birth instant. GeoNames supplies the city, the coordinates, and the time zone with the daylight saving rule of that year. On most dates the Moon stays in one sign all day, and the date plus the city is enough. On the day it crosses a boundary, the calculator says so and uses the clock. The library's stated goal is about one arcminute for dates in the centuries around the present. A birth time that is off by a few hours is the larger error, and only on those crossing days.
Positions use Astronomy Engine. Cities use GeoNames (CC BY 4.0). Read the limits on how we calculate.
Questions
What is a Moon sign?
It is the zodiac sign the Moon occupied at your birth. People often describe it as the emotional side: what comforts you and how you react. The calculator finds the sign from the sky, not from a personality test.
Do I need my birth time?
The date and city are enough on most days. If the Moon changed sign that day, the calculator says so and the time decides which side of the change you were born on.
How fast does the Moon move?
It crosses a sign in about two and a half days, much faster than the Sun. That is why two people born the same week can have different Moon signs.
How accurate is the position?
Astronomy Engine aims for about one arcminute on dates in the centuries around now. On a quiet day that is plenty. On a changeover day, an uncertain clock is the bigger limit.
Is the Moon sign my Sun sign?
Only if the Moon happened to be in the Sun's sign when you were born. They move on different clocks. Use this page for the Moon and the zodiac calculator for the Sun.