March 21 Zodiac Sign

People born on March 21 are Pisces or Aries.

Most zodiac date tables put March 21 in Aries, but the Sun changes sign at a slightly different moment each year. In 137 of the 201 years from 1900 to 2100 it moved from Pisces into Aries during March 21 somewhere in the world, and in the other 64 the whole day was Aries. So a March 21 birthday can be either sign: the year, the hour and the place decide.

Your birth time and place settle it: your free birth chart shows exactly which sign the Sun was in when you were born.

What Pisces is like

Symbol: The Fish
Element: Water
Modality: Mutable
Ruler: Neptune (traditionally Jupiter)
Usual dates: February 19 to March 20

Pisces has thin walls. A mutable water sign ruled traditionally by Jupiter and modernly by Neptune, Pisces takes the world in without much filter: other people's moods, the atmosphere of a place, the feeling under a piece of music.

Strengths

Compassionate
Imaginative
Intuitive
Forgiving
Gentle

Growth edges

Porous boundaries
Escapist
Vague
Absorbs other people's moods

Read the full Pisces profile →

What Aries is like

Symbol: The Ram
Element: Fire
Modality: Cardinal
Ruler: Mars
Usual dates: March 21 to April 19

Aries is the zodiac's opening act: the first spark, the one who moves before the room has finished deliberating. Ruled by Mars and born at the very start of spring, an Aries runs on initiative.