January 21 Zodiac Sign: Aquarius

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Date

January 21

Sun sign

Aquarius

Usual range

January 20 to February 18

Place in sign

early, decan 1

Sub-ruler

Uranus

Element

Air

Modality

Fixed

Ruling planet

Uranus

Changeover

No

Constellation

Capricornus

The Sun sign on January 21 is Aquarius. Across the 41 years from 1992 to 2032, a noon UTC reading does not leave Aquarius.

Aquarius dates are January 20 to February 18. January 21 falls in the early part of Aquarius. It is an air sign, fixed, ruled by Uranus. Independent, idea-led, a little apart from the crowd.

January 21 sits within two days of a sign change on January 19 and January 20. If the birth was late on this date, check the year in the calculator rather than the printed range.

In 2024 at noon UTC, the Sun on January 21 is in the first decan of Aquarius, the early 10 degrees of the sign. The triplicity sub-ruler of that slice is Uranus.

The constellation behind the Sun on January 21 is Capricornus. That is the true place of the Sun in the stars, and it is a separate fact from the astrological sign.

Moon, Rising, Mercury, Venus, and Mars still need a birth time and place. This page only settles the Sun sign.

Sign page: Aquarius. Check this birthday in the zodiac calculator.

Questions

What zodiac sign is January 21?

January 21 is Aquarius. These pages read the Sun at noon UTC, which is the same tropical sign the zodiac calculator reports for a birth at 12:00 UTC. From 1992 to 2032 that noon figure stays in Aquarius. Use a birth time in the calculator if you were born near a nearby changeover.

Is January 21 a cusp birthday?

No. Noon UTC on January 21 stays in Aquarius for every year checked. A sign change still sits nearby, on January 19 and January 20, so a late birth on this date can be worth a calculator check. The first and last days of January 20 to February 18 are the usual edge.

What is the January 21 star sign?

People searching for the January 21 star sign usually mean the Sun sign. On this page that is Aquarius, an air sign, fixed, ruled by Uranus, in the early decan with Uranus as the triplicity sub-ruler. Aquarius dates are January 20 to February 18. The constellation behind the Sun is a separate fact.