|Duration (tropical, western)||July 22 – August 22 (2017, UT1)|
|Constellation||constellation of Leo|
|Detriment||Saturn (ancient), Uranus (modern)|
New millennium astrological chart
Leo (♌) (Greek: Λέων, Latin: Leōn), is the fifth astrological sign of the zodiac, originating from the constellation of Leo. It comes after Cancer (Greek: Καρκίνος, Latin: Karkinos) and before Virgo (Greek: Παρθένος, Latin: Parthenos). Under the tropical zodiac, the Sun transits this area approximately between July 23 and August 22; the sign spans the 120th to 150th degree of celestial longitude.
Astrology, in its broadest sense, is the search for human meaning in the sky; it seeks to understand general and specific human behavior through the influence of planets and other celestial objects. It has been argued that astrology began as a study as soon as human beings made conscious attempts to measure, record, and predict seasonal changes by reference to astronomical cycles. Astrology is believed to have originated in China about the 3rd millennium BC. Its system is based on astronomy and calendars and its development is tied to that of astronomy, which came to flourish during the Han Dynasty (2nd century BC to 2nd century AD).
Leo is a fixed sign along with Taurus, Scorpio, and Aquarius. 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 symbol of the lion is based on the Nemean lion, a lion with an impenetrable hide. It is a northern sign and its opposite southern sign is Aquarius. Leos are usually at bay with Aries, Other Leos and Sagittarius. Leos often are best suited with the opposing sign Aquarius and others such as Cancer, Scorpio and Taurus. Leos do not see eye to eye with Pisces and Virgo and in terms for friendship Capricorn and Taurus are well suiting.
- Astronomical Applications Department 2011.
- "Leo". Encyclopædia Britannica. United States: Encyclopædia Britannica, Inc. 2017. Retrieved June 17, 2017.
- Campion 2008, pp. 1–3.
- Pankenier 2015.
- 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.
- 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°....
- Campion, Nicholas (2008). A History of Western Astrology, Vol. 1, The Ancient World (first published as The Dawn of Astrology: A Cultural History of Western Astrology). London: Continuum International Publishing Group. pp. 1–3, 84, 173–174. ISBN 978-1441181299.
- Pankenier, David W. (2015). Astrology and Cosmology in Early China: Conforming Earth to Heaven (Paperback ed.). Cambridge: Cambridge University Press. ISBN 978-1107539013.
- Keen, Athena (2014). Cosmic Astrology: The Book of Answers. The Oracle's Library. p. 251. ISBN 978-0578151588.
- Parker, Derek; Parker, Julia (1983). A History of Astrology. New York City: HarperCollins. ISBN 978-0233975764.
- 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)