Leo is the fifth sign of the zodiac, which originated in Leo. It happens after cancer and before Virgo. Under the tropical zodiac, the sun crosses the region between July 23 and August 22; the sign spans 120 to 150 degrees of the sky's longitude.

Leo is the fixed sign of Taurus, Scorpio and Aquarius. Under the tropical zodiac, the sun passes through the region between July 23 and August 22 on average every year, while under the stellar zodiac, the sun currently passes through the region between August 16 and September 15. The symbol of the lion is based on the Nemean lion, a lion with indestructible fur. It's a northern sign, and the opposite Southern sign is Aquarius