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Leo is the fifth astrological sign of the Zodiac, starting from the constellation of Leo. Leo is considered to be a "feminist ", positive (extrovert) sign. It is also considered a fire sign and is one of four fixed signs  ruled by the Sun. Being the fifth sign of the zodiac, Leo has been associated with the astrological fifth house.
Individuals born when the Sun is in this sign are considered Leo individuals. The Sun is in Leo roughly from July 22 to August 23. Under the sidereal zodiac, it is currently there roughly from August 10 to September 15.
- Jeff Mayo, Teach Yourself Astrology, pp 38-41, Hodder