Gemini (astrology)

Gemini is the astrological Zodiac sign that represents the constellation Gemini. In the tropical zodiac, Gemini is from May 20 to June 20. Under the sidereal zodiac, it is now from June 15 to July 15. The opposite sign to Gemini is Sagittarius. 
Symbol.
This sign for Gemini was made from two lines, representing the twins.
Mythology.
In mythology Gemini is related to Greek myth of the twins of Zeus and Leda, Castor and Pollux.
Astrology.
In astrology Gemini is ruled by the planet Mercury.