Leo is the fifth astrological sign

Astrological sign

Astrological signs represent twelve equal segments or divisions of the zodiac. According to astrology, celestial phenomena reflect or govern human activity on the principle of "as above, so below", so that the twelve signs are held to represent twelve basic personality types or characteristic modes...

 of the Zodiac

Zodiac

In astronomy, the zodiac is a circle of twelve 30° divisions of celestial longitude which are centred upon the ecliptic: the apparent path of the Sun across the celestial sphere over the course of the year...

, originating from the constellation of Leo

Leo (constellation)

Leo is one of the constellations of the zodiac. Its name is Latin for lion. Its symbol is . Leo lies between dim Cancer to the west and Virgo to the east.-Stars:...

. In astrology

Astrology

Astrology consists of a number of belief systems which hold that there is a relationship between astronomical phenomena and events in the human world...

, Leo is considered to be a "masculine", positive (extrovert) sign

Positive sign

In astrology, a positive, dominant, active, yang, diurnal or masculine sign refers to any of the six odd-numbered signs of the zodiac: Aries, Gemini, Leo, Libra, Sagittarius or Aquarius....

. It is also considered a fire sign and is one of four fixed sign

Fixed sign

The four fixed signs of the Zodiac are:*Taurus : - spring in northern hemisphere and autumn in southern hemisphere.*Leo : - summer in northern hemisphere and winter in southern hemisphere....

s ruled by the Sun

Sun (astrology)

The sun is considered a very important part of astrology. It, as well as the Moon, are the most important of the astrological planets, and the two of them are often referred to as the luminaries. In Greek mythology the sun was represented by Apollo, the god of light, and Helios, the god of the sun...

.

Individuals born when the Sun

Sun (astrology)

The sun is considered a very important part of astrology. It, as well as the Moon, are the most important of the astrological planets, and the two of them are often referred to as the luminaries. In Greek mythology the sun was represented by Apollo, the god of light, and Helios, the god of the sun...

 is in this sign are considered Leo individuals. Under the tropical zodiac, Leo is occupied by the Sun from July 23 to August 23. Under the sidereal zodiac, it is currently there roughly from August 10 to September 15.
The people under this sign are considered by most modern astrologers as natural leaders.