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Western Astrology · Sun Sign

January Zodiac Signs

January babies are either Capricorn or Aquarius — depending on their birthdate.

Capricorn

December 22 – January 19

earthcardinalRuler: Saturn

Disciplined, strategic, and ambitious. Capricorn plays the long game, building empires through patience, persistence, and quiet determination.

Capricorn Full Profile Daily Horoscope

Aquarius

January 20 – February 18

airfixedRuler: Uranus

Innovative, independent, and humanitarian. Aquarius thinks decades ahead, championing progress and unconventional ideas for the collective good.

Aquarius Full Profile Daily Horoscope

January Zodiac Dates at a Glance

Date RangeZodiac Sign
January 1 – January 19Capricorn
January 20 – January 31Aquarius

Born on the Cusp?

The zodiac sign transition in January happens around January 20, when the Sun moves from Capricorn into Aquarius.

If you were born within a day or two of this date, you are considered “born on the cusp.” The exact moment the Sun changes signs varies slightly each year, so your true Sun sign depends on your birth year and time — not just the date.

Cusp-born individuals often feel they relate to traits of both signs. While astrologically you have only one Sun sign, the influence of the adjacent sign can colour your personality, especially if other planets in your chart fall in that neighbouring sign.

To determine your exact Sun sign if you were born near the cusp, use a precise birth chart calculator that factors in the year and time of birth.

Find Your Exact Zodiac Sign

Not sure which sign you are? Our Rashi Finder calculates your precise Sun sign and Vedic Moon sign based on your exact date, time, and place of birth.

Find My Sign

Frequently Asked Questions

What zodiac sign is January?
January has two zodiac signs: Capricorn (December 22 – January 19) and Aquarius (January 20 – February 18). Your Sun sign depends on your exact date of birth within the month.
What if I'm born on the cusp?
If you were born on the boundary date between two signs (the "cusp"), your Sun sign depends on the exact year and time of your birth. The Sun transitions signs at a specific moment each year, which can vary by a day. To find your exact sign, use a birth chart calculator that accounts for the year and time of birth.
What's the difference between sun sign and moon sign?
Your Sun sign (what most people call their "zodiac sign") is based on the Sun's position at birth and represents your core identity and ego. Your Moon sign is based on the Moon's position and governs emotions, instincts, and your inner self. Western astrology emphasises the Sun sign, while Vedic astrology (Jyotish) primarily uses the Moon sign (Rashi). For a complete picture, both are important.