Born on January 21
A January 21 birthday is Capricorn or Aquarius.
The Sun moves from Capricorn into Aquarius on or around January 21, so your birth year, time and place decide your sign. Most January 21 births are Aquarius. Add your birth details below and Danu checks it from your exact birth moment.
Your chart
Capricorn or Aquarius? Check your Sun.
Enter your birth details. Danu computes your Sun's exact position from your birth moment.
The sky on your birthday
The Sun on January 21
- Sun position
- 29° Capricorn to 2° Aquarius
- Every position a January 21 birth can have, 1925 to 2025, any time zone.
- Sign change
- Capricorn to Aquarius
- Usually Aquarius on this date. An exact birth time settles it.
- Day of the year
- 21
- Day 21 in a leap year.
Your Sun
What Capricorn and Aquarius carry
Sun in Capricorn or Sun in Aquarius
The Sun is your center of gravity — the thing you keep returning to. Read what Capricorn or Aquarius actually means, then go past it: your chart has a Moon, a rising sign, and a live sky moving over it right now.
Good company
Famous January 21 birthdays
People who share your birthday — and, for the ones with a verified birth time, a full natal chart you can read.
Nearby
Birthdays either side
Common questions
January 21 birthdays, answered
What zodiac sign is January 21?
Capricorn or Aquarius. The Sun changes sign on or around January 21, so it depends on the birth year, time and place. Most January 21 births are Aquarius. An exact birth time settles it.
Is a January 21 birthday a Capricorn–Aquarius cusp?
Yes, in the popular sense: the Sun changes sign on or around this date. Astrologically the Sun is always in one sign or the other, never a blend. Compute your chart with your exact birth time to see which.
What famous people were born on January 21?
Christian Dior (1905).
What day of the year is January 21?
Day 21, or day 21 in a leap year.
Your turn
Your Sun sign is the trailer
See your whole chart — Moon, rising, and what the sky is doing over it today.