Born on March 21
A March 21 birthday is Pisces or Aries.
The Sun moves from Pisces into Aries on or around March 21, so your birth year, time and place decide your sign. Most March 21 births are Aries. Add your birth details below and Danu checks it from your exact birth moment.
Your chart
Pisces or Aries? 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 March 21
- Sun position
- 28° Pisces to 2° Aries
- Every position a March 21 birth can have, 1925 to 2025, any time zone.
- Sign change
- Pisces to Aries
- Usually Aries on this date. An exact birth time settles it.
- Day of the year
- 80
- Day 81 in a leap year.
Your Sun
What Pisces and Aries carry
Sun in Pisces or Sun in Aries
The Sun is your center of gravity — the thing you keep returning to. Read what Pisces or Aries 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 March 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
March 21 birthdays, answered
What zodiac sign is March 21?
Pisces or Aries. The Sun changes sign on or around March 21, so it depends on the birth year, time and place. Most March 21 births are Aries. An exact birth time settles it.
Is a March 21 birthday a Pisces–Aries 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 March 21?
Ayrton Senna (1960).
What day of the year is March 21?
Day 80, or day 81 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.