Babylonian Zodiac Calculator
Discover your sign in an early zodiac lineage. See the Babylonian sign name, its deity association, and how this approximate sidereal-style date range compares to your modern Western sign.
How This Calculator Works
Babylonian astrology is one of the earliest documented organized astrological traditions. Ancient Mesopotamian omen practice came first; the 12-sign, 360-degree zodiac was a later Babylonian mathematical coordinate system, best attested in the fifth century BCE. Greek, Indian, and Arabic-language astrology all inherit important pieces of this sky vocabulary, though each tradition developed its own methods.
The Babylonian zodiac was star-referenced, but the standardized zodiac signs were equal 30-degree sections, not the uneven modern IAU constellation boundaries. Bright reference stars such as Aldebaran in The Bull of Heaven and Antares in The Scorpion helped anchor observations. Later Western astrology settled into a tropical zodiac tied to the March equinox. The tropical and sidereal reference frames are now about 24 to 25 degrees apart, depending on the ayanamsa used.
The 12 Babylonian Zodiac Signs
| Babylonian Name | Cuneiform | Modern Sign | Deity |
|---|---|---|---|
| The Hired Man | MUL LU.HUN.GA | Aries | Dumuzi |
| The Bull of Heaven | MUL GU4.AN.NA | Taurus | Ishtar (as bull-sender) |
| The Great Twins | MUL MASH.TAB.BA.GAL.GAL | Gemini | Lugalgirra and Meslamtaea |
| The Crayfish | MUL AL.LUL | Cancer | Enki (associated) |
| The Lion | MUL UR.GU.LA | Leo | Latarak |
| The Furrow | MUL AB.SIN | Virgo | Shala |
| The Scales | MUL ZI.BA.AN.NA | Libra | Shamash (associated) |
| The Scorpion | MUL GIR.TAB | Scorpio | Ishhara |
| Pabilsag | MUL PA.BIL.SAG | Sagittarius | Pabilsag (Ninurta, associated) |
| The Goat-Fish | MUL SUHUR.MASH | Capricorn | Enki/Ea |
| The Great One | MUL GU.LA | Aquarius | Ea (as water-pourer) |
| The Tails | MUL KUN.MESH | Pisces | Anunitum (associated) |
From 18 Constellations to 12 Signs
The MUL.APIN star catalog records a longer list of constellations along the Moon's path. These constellations were not equal 30-degree signs. In the second half of the fifth century BCE, Babylonian astronomy began using a 360-degree zodiac divided into 12 equal signs of 30 degrees each, a mathematical frame that made planetary positions easier to record and compute.
This calculator is a modern date-based comparison, not a reconstruction of an ancient observational horoscope. It maps your birthday to approximate Babylonian-style sign ranges and shows a reference MUL.APIN constellation layer where useful. For a precise sidereal chart based on your birth year, time, and location, use the sidereal chart calculator. To compare the seasonal zodiac with a star-referenced frame directly, use the tropical vs sidereal chart calculator.
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Frequently Asked Questions
What is Babylonian astrology?
Babylonian astrology is one of the earliest documented organized astrological traditions, rooted in ancient Mesopotamian omen astronomy. The equal 12-sign, 360-degree zodiac is a Babylonian development best attested in the fifth century BCE. It was a star-referenced equal-sign coordinate system, unlike modern Western tropical astrology's equinox-anchored zodiac.
What is the difference between the 12-sign and 18-constellation systems?
Before the equal-sign zodiac, Babylonian star lists recorded a longer set of constellations along the Moon's path. These constellations had uneven sizes. In the fifth century BCE, Babylonian astronomers began using a 360-degree coordinate system divided into 12 equal signs of 30 degrees each. Later Western and many Indian astrological systems inherited the 12-sign frame, then developed different rules and reference points.
Is Babylonian astrology the same as Sumerian astrology?
Not exactly. The Sumerians (3500 to 2000 BCE) created early star catalogs and celestial observations, but systematic zodiacal astrology was developed by the Babylonians who inherited Sumerian culture. The MUL.APIN star catalog draws on Sumerian naming conventions, and many constellation names use Sumerian words, but the mathematical zodiac and omen-based astrology system was a Babylonian achievement.
How is the Babylonian zodiac different from my Western zodiac sign?
This calculator uses approximate sidereal-style date ranges inspired by the Babylonian star-referenced zodiac. Modern Western astrology usually uses a tropical zodiac anchored to the equinoxes. Due to precession, common sidereal and tropical frames are now about 24 to 25 degrees apart. That is why this Babylonian-style date result may differ from your Western tropical sign by one position.
What are the Babylonian constellation names?
The 12 Babylonian signs are: The Hired Man (Aries), The Bull of Heaven (Taurus), The Great Twins (Gemini), The Crayfish (Cancer), The Lion (Leo), The Furrow (Virgo), The Scales (Libra), The Scorpion (Scorpio), Pabilsag (Sagittarius), The Goat-Fish (Capricorn), The Great One (Aquarius), and The Tails (Pisces). Each name reflects Mesopotamian mythology and agricultural life.
Did the Babylonians invent the zodiac?
The equal 12-sign zodiac divided into 30-degree segments is a Babylonian development best attested in the fifth century BCE. Earlier Babylonian star lists used a longer and uneven set of constellations along the Moon's path. The 12-sign coordinate frame later entered Greek astrology and became one foundation of Hellenistic and modern Western astrology, alongside many later Greek, Egyptian, Indian, Persian, Arabic-language, and medieval layers.
See where the Babylonian zodiac fits in your full chart
Save your birth data, then compare this date-based Babylonian reference with your full tropical and sidereal chart.
Compare tropical and sidereal