Capricorn Dates, Traits & Compatibility (Dec 22 to Jan 19)

Capricorn illustration

Capricorn runs December 22 to January 19, the only sign whose date range crosses the New Year, and it has one of the stranger symbols in the zodiac: a goat that turns into a fish partway down its body.

Dates, element, and modality

• Dates: December 22 to January 19 (this range crosses into the new year)
• Element: Earth
• Modality: Cardinal
• Symbol: The Sea-Goat, drawn as a goat’s head over a curled fish tail (♑)

Cardinal signs open a season, and Capricorn opens winter right at the solstice, the year’s longest night. Cardinal Earth is where astrology gets Capricorn’s “ambitious starter” reputation, a very different profile from Taurus’s Fixed Earth (steady, resistant to change) or Virgo’s Mutable Earth (adaptable, detail-focused).

The myth behind the symbol

The goat-fish hybrid predates the Greeks by well over a thousand years: Babylonian astronomers linked these stars to their god Ea as far back as the Middle Bronze Age. Greek mythology layered two different stories onto that older image. One identifies the constellation as Amalthea, the goat whose milk fed the infant Zeus after his mother hid him from his father Cronus; Zeus later placed her among the stars in gratitude, and her broken horn became the cornucopia, the horn of plenty. The other, more literal explanation for the fish tail involves the goat-god Pan, who was diving into a river to escape the monster Typhon and only managed to transform half of himself before Typhon closed in, leaving him with a goat’s upper body and a fish’s tail. Both stories, along with the older Babylonian goat-fish, get folded into the same constellation today.

Ruling planet

Capricorn is traditionally ruled by Saturn, astrology’s symbol for discipline, structure, and long-term responsibility, a fitting match for a Cardinal Earth sign built around ambitious, practical starts. As with every sign here, this is a symbolic astrology assignment, not a physical fact. Saturn’s rings and its actual orbital behavior have no bearing on the constellation Capricorn; the “rulership” is inherited chart-reading tradition.

Personality lore

Cardinal Earth combines Earth’s practicality with Cardinal modality’s drive to initiate, a specific mix that astrology writers use to describe Capricorn as steadily ambitious, focused on long-term planning, and comfortable with structure and hierarchy. That’s meaningfully different from Taurus, described as resistant to change once settled, or Virgo, framed as detail-oriented and adaptable. Capricorn’s lore is about starting the climb, not just tolerating it.

Compatibility

Charts commonly pair Capricorn with Taurus and Virgo, the other two Earth signs, on the theory that shared-element signs value the same things: reliability, patience, tangible results. Water signs, especially Cancer and Scorpio, are the other classic pairing, since Water is said to nourish Earth’s growth. As always, treat compatibility lists as folklore rather than a verdict on real relationships.

Tropical zodiac vs the night sky

Capricorn’s dates follow the tropical zodiac, a seasonal system tied to the winter solstice rather than a live map of the stars. Stated plainly, once: none of this is science. Astronomy tracks the measurable positions of stars and planets; astrology layers cultural meaning onto birth dates through an older symbolic framework, and the two aren’t in conflict because they’re not answering the same question. Precession, Earth’s roughly 26,000-year axial wobble, has shifted which constellation the sun is actually crossing on a given date since these tropical boundaries were set in antiquity; Capricornus itself is now one of the faintest and smallest constellations the sun passes in front of. NASA’s explainers on this topic also mention Ophiuchus, a 13th constellation on the ecliptic with no tropical sign of its own. If you were born right around December 22 or January 19, the neighboring Sagittarius or Aquarius pages are worth a look, since some charts shift these cusps by a day.

Nearby signs

Compare Sagittarius and Aquarius, or browse the full Western zodiac hub. Capricorn birthdays span two birthstone months, December and January, a separate tradition from sun signs.

Enter your birth date in the birthday calculator to confirm your sign, weekday, and moon phase, and see methodology for how this site classifies dates.