Aries (♈) is the zodiac sign for people born March 21 – April 19. It is a Fire sign ruled by Mars. Key traits: bold, energetic, pioneering, competitive.
Aries is a fire sign, and people born under it are often described as bold, energetic, pioneering, competitive. In Western (tropical) astrology, your "sun sign" is determined by the Sun's position on your birth date — which for Aries means being born between March 21 – April 19.
Note that exact cusp dates can shift by about a day from year to year because the tropical zodiac is tied to the equinox, not the fixed calendar. If you were born on a cusp date, check the precise boundary for your birth year.