|Duration (tropical, western)||July 22 – August 22 (2021, UT1)|
|Detriment||Saturn and Uranus|
|Exaltation||Neptune and Pluto|
Leo (♌︎) (Greek: Λέων, Leōn), Latin for Lion, is the fifth sign of the zodiac. It corresponds to the constellation Leo and comes after Cancer and before Virgo. The traditional Western zodiac associates Leo with the period between July 23 and August 22, and the sign spans the 120th to 150th degree of celestial longitude.
Leo is associated with fire, accompanied by Aries and Sagittarius, and its modality is fixed. Under the tropical zodiac, the Sun transits this area on average between July 23 and August 22 each year, and under the sidereal zodiac, the Sun currently transits this area from approximately August 16 to September 15. The constellation Leo is associated with the mythological Nemean lion. The lion is a very important and prominent symbol in Greek mythology. Its opposite sign is Aquarius.
Egyptians worshipped the constellation, which they referred to as "Knem", because it was present during the flooding of the Nile River. This event signified plentiful harvests for the upcoming year, and the people interpreted it as a gift from the earth. Ruler of Egypt, Tutankhamun's gold throne features lion heads where the seat and front legs meet, as well as clawed feet at the end of each leg, symbolizing power and royalty.
- Astronomical Applications Department 2011.
- "Leo". Encyclopædia Britannica. United States: Encyclopædia Britannica, Inc. 2017. Retrieved June 17, 2017.
- Swift, Jackson (2015). "Astrology: Tropical Zodiac and Sidereal Zodiac". goarticles.com. Archived from the original on December 23, 2015. Retrieved March 24, 2016.
- Atsma, Aaron J. "Nemean Lion". The Theoi Project: Greek mythology. Retrieved July 27, 2016.
- "Leo". Windows to the Universe. Arlington, Virginia: National Science Teachers Association. Retrieved July 27, 2016.
- Snodgrass, E (1997). Signs of the Zodiac : A Reference Guide to Historical, Mythological, and Cultural Associations. Greenwood Publishing Group. ISBN 9780313008177.
- Astronomical Applications Department (2011). Multiyear Computer Interactive Almanac. 2.2.2. Washington DC: US Naval Observatory. Longitude of Sun, apparent geocentric ecliptic of date, interpolated to find time of crossing 0°, 30°....
- The dictionary definition of Leo at Wiktionary
- Media related to Leo at Wikimedia Commons
- Warburg Institute Iconographic Database (over 300 medieval and early modern images of Leo)