Capricorn Zodiac Sign: Dates, Traits, Myth, and Star Facts

The Capricorn zodiac sign runs from December 22 through January 19, and it sits at the quiet, cold corner of the year where the Sun turns back north. Capricorn is the tenth constellation of the zodiac, and its name is the Latin word for “goat-horned.” We will walk through the dates, the Sea-Goat behind the symbol, the long pile of mythology, the constellation overhead, the traits the tradition attributes to people born under the sign, and the honest line between astronomy and astrology.

If you want the big picture first, see our overview of all twelve zodiac signs.

When Is Capricorn Season?

In Western tropical astrology, the Sun moves into Capricorn on December 22 and stays there until January 19. The exact handoff can slip by a day in either direction depending on the year and your time zone, but the window holds. If your birthday lands inside it, your Sun sign is Capricorn.

Capricorn season opens at the winter solstice, the shortest day of the year in the Northern Hemisphere. The Sun reaches its lowest point in the sky and then begins its slow climb back. That solstice timing is woven into the way the tradition reads the sign: Capricorn is the patient builder who starts in the dark and works toward the light.

If you were born on the edge, December 22 or January 19 to 20, you sit on a cusp and may want to look up your exact birth time before claiming the sign. A cusp does not change the calendar, only how cleanly your chart sits inside one sign.

The Capricorn Symbol: The Sea-Goat

The astrological glyph for Capricorn is ♑, a curl that hints at both a goat’s horn and a fish’s tail. The figure behind the glyph is the Sea-Goat, a mythological beast with the head and forequarters of a goat and the lower body of a fish. The Latin word Capricornus means “goat-horned.” Some renderings show Capricorn as an ordinary goat. The older, stranger version, and the one the tradition keeps coming back to, is the Sea-Goat.

The split body matches the sign’s split job. The goat half climbs steadily, sure-footed, ambitious. The fish half dives into the deep, into intuition, into the parts of life that cannot be planned. Capricorn is read as both at once: the worker who keeps a foot in the practical world and a tail in something quieter.

The Mythology of Capricorn

Pan, Typhon, and the Leap Into the Nile

The best-known Greek story behind the constellation belongs to Pan, the goat-legged god of wild places. When the monster Typhon attacked the gods on Mount Olympus, Pan dove into the Nile to escape. The part of him above the water stayed a goat. The part below transformed into a fish. Zeus, taken with the trick, fixed Pan’s odd new shape in the night sky as Capricorn. That is the Sea-Goat the glyph carries forward.

Amalthea, the Goat Who Nursed Zeus

A second strand of the story drops the fish tail. In this version Capricorn is Amalthea, the goat whose milk sustained the infant Zeus when his mother, Rhea, hid him to prevent him from being devoured by his father, Cronos. Zeus accidentally broke off one of her horns. The broken horn became the legendary horn of plenty, the cornucopia, which granted the holder’s every wish. When Amalthea died, Zeus set her among the stars in thanks.

Suhur-Mash and the Sumerian Goat-Fish

The Sea-Goat is older than the Greeks. Babylonian star charts show a creature called Suhur-Mash, literally “goat-fish,” in the same patch of sky more than 5,000 years ago. To the ancient Sumerians, this figure represented the god Enki, who rose out of the sea to bring culture, writing, and irrigation to the human race. Capricorn, in some form, is one of the oldest zodiac symbols on record. For a longer look at the Babylonian sky tradition, the Britannica entry on the zodiac is a clean primer.

Capricorn Personality Traits

People born during this window have Capricorn as their Sun sign. Proponents of astrological determinism believe that people born under the same Sun sign share certain character traits. Astrology is a folk tradition, not a science. Two people born under the same Sun sign are not interchangeable, and traits are best read as a starting sketch, not a forecast. With that on the record, here is the picture the tradition paints of a Capricorn:

• Organized
• Patient
• Practical
• Tidy
• Hard-working
• Ambitious
• Detail-oriented
• Trustworthy
• Disciplined, comfortable with long timelines
• Reserved, slow to open up but loyal once they do
• Traditional, drawn to institutions, family, and craft

The flip side of discipline is rigidity. The flip side of ambition is workaholism. None of this is destiny. Take what is useful, leave the rest.

The Capricorn Constellation

Capricorn, also written Capricornus, is one of the fainter constellations of the zodiac. It contains 49 stars, including 12 named stars, and its 13 main stars form the shape of a goat (or, in older renderings, the Sea-Goat with a fish’s tail). It sits in the sky between Sagittarius to the west and Aquarius to the east. Other nearby constellations include Aquila, Microscopium, and Piscis Austrinus.

The brightest star in Capricorn is Deneb Algedi (Delta Capricorni), at magnitude 2.85. The Arabic name translates to “the kid’s tail,” the tail of the goat. The constellation is faint by zodiac standards, none of its stars are very bright, so it rewards a dark sky.

Unlike some of the more visually interesting members of the zodiac, Capricorn contains only one Messier object: the globular cluster M30, a tight ball of ancient stars discovered by Charles Messier in 1764. For a deeper look at the deep-sky objects in this patch of sky, NASA’s science portal is a good starting place.

The best time to spot Capricorn is in the late summer and early autumn, when it rides low in the southern sky after sunset. For tips on what to look for month by month, see our monthly stargazing guides.

Capricorn Compatibility

By the classic element rules, earth signs pair smoothly with earth signs and with water signs. For Capricorn that points to:

• Taurus and Virgo: fellow earth signs, grounded, practical, dependable.
• Scorpio and Pisces: water signs that soften the Capricorn edge and reward its loyalty.
• Cancer: the opposite sign on the wheel, which the tradition reads as a magnetic, complementary match between work and home.

Air signs (Gemini, Libra, Aquarius) and fire signs (Aries, Leo, Sagittarius) can pair well too. Real compatibility lives in the full chart, not the Sun sign alone, so treat the list as a conversation starter.

Capricorn Birthstones

Capricorn straddles two months, so it claims two sets of traditional birthstones.

• December (December 22 to 31): tanzanite, zircon, or turquoise, the modern trio for December, paired with the long winter blues of the season.
• January (January 1 to 19): garnet, the deep red stone of protection and loyalty.

Famous Capricorns

Plenty of well-known names share the sign. Birth date is what matters, not how well the description fits.

• Isaac Newton (January 4)
• Martin Luther King Jr. (January 15)
• Michelle Obama (January 17)
• Dolly Parton (January 19)
• Benjamin Franklin (January 17)
• Muhammad Ali (January 17)
• Stephen Hawking (January 8)

Scientists, civil-rights leaders, and patient craftspeople are over-represented on lists like this, which is part of why the Capricorn reputation for disciplined long-haul work has stuck. As always, the sign is one input, not the whole person.

The Winter Solstice and the Tropic of Capricorn

Capricorn season opens on the same day as the Northern Hemisphere winter solstice. That timing is also the source of one of the most quietly important lines on a world map. The Tropic of Capricorn is the parallel of latitude at roughly 23.5 degrees south, the southernmost point where the Sun appears directly overhead at noon. That moment lands on the December solstice, when the Sun crosses into the astrological sign of Capricorn.

The line takes its name from the sign. When the boundary was first drawn by ancient astronomers, the December solstice Sun sat against the stars of Capricorn. Precession has shifted the actual stellar backdrop since then (the Sun now stands against Sagittarius at the December solstice), but the geographic name held. The Tropic of Capricorn still runs through Australia, southern Africa, and South America, marking the southern edge of the tropics.

Astronomy vs. Astrology

The Capricorn constellation and the Capricorn sign are not the same object. Capricornus is the name of the constellation, a pattern of real stars at real distances, mapped and measured by astronomers. Capricorn is the name of the astrological sign, a 30-degree slice of the sky used to read meaning into birth dates. The two systems overlap, but they answer different questions. To the ancient Sumerians, the same patch of sky represented the god Enki, who rose out of the sea to bring culture to the human race. The story moved; the stars stayed. For a fuller treatment, see our companion piece on astronomy vs. astrology.

Join The Discussion

Is Capricorn your zodiac sign?

Do you believe in the character traits listed above?

Let us know in the comments below!

Capricorn FAQ

What are the Capricorn zodiac sign dates?

Capricorn dates run from December 22 to January 19 each year. The exact start and end can slip by a day depending on the year and time zone, but the window holds across modern Western astrology.

Is Capricorn an earth sign?

Yes. Capricorn is one of the three earth signs, along with Taurus and Virgo. Earth signs are associated with practicality, patience, and long-term work. The Sea-Goat symbol is a separate piece of imagery and does not change the element.

What is the symbol for Capricorn?

The symbol is the Sea-Goat (♑), a mythological creature with the head and forequarters of a goat and the lower body of a fish. The Latin name Capricornus means “goat-horned.”

What planet rules Capricorn?

Capricorn is ruled by Saturn, the planet of structure, discipline, and long timeframes. Saturn’s slow orbit (roughly 29 years) matches the patient, long-haul reputation the tradition gives Capricorn.

What is the Capricorn birthstone?

Capricorn spans two months, so it has two sets of birthstones. People born December 22 to 31 share the December birthstones: tanzanite, zircon, or turquoise. People born January 1 to 19 share garnet, the January birthstone.

Who is Capricorn compatible with?

By element, Capricorn pairs smoothly with fellow earth signs Taurus and Virgo, and with water signs Scorpio and Pisces. Cancer, the opposite sign on the wheel, is the classic work-and-home match. Real compatibility lives in the full birth chart, not the Sun sign alone.

What is the brightest star in the Capricorn constellation?

Deneb Algedi (Delta Capricorni) is the brightest star in Capricorn, at magnitude 2.85. The Arabic name translates to “the kid’s tail,” the tail of the goat. The constellation also contains one Messier object, the globular cluster M30.

Why is the Tropic of Capricorn named after the sign?

When the boundary was first drawn, the December solstice Sun stood against the stars of Capricorn. The Tropic of Capricorn marks roughly 23.5 degrees south latitude, the southernmost point where the Sun appears directly overhead at noon. Precession has shifted the actual stellar backdrop since then, but the name has held.

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