In Western astrology, based on the twelve equal divisions of the ecliptic from the Aries point or March equinox that begins the zodiac wheel, someone is considered to be of the Gemini sign when born between May 21 and on June 21​ or also, since the start and end dates can change each year depending on the exact moment of the March equinox and the time zone of the place on the planet where you were born,note between May 21 and June 20.