Sagittarius is the ninth astrological sign in the Zodiac, originating from the constellation of Sagittarius. In western astrology, the sign is no longer aligned with the constellation as a result of the precession of the equinoxes. Sagittarius is classed as a positive or masculine, extrovert sign; its element is fire and its quality is mutable. Sagittarius is ruled by the planet Jupiter.Individuals born when the sun was in this sign are considered Sagittarius individuals. Under the tropical zodiac, the sun enters Sagittarius around November 22-23 and exits around December 21. Under the sidereal zodiac, it is currently there roughly from December 16 to January 14. People born on these juncture dates would have to have an astrological chart drawn if they wished to determine which sign the sun was in at the exact time of their birth.
In Greek mythology, Sagittarius is identified as a centaur, half human, half horse. In some legends, the Centaur Chiron was the son of Philyra and Saturn, who was said to have changed himself into a horse to escape his jealous wife, Rhea. Chiron was eventually immortalised in the constellation of Centaurus, or in some version, Sagittarius. The arrow of this constellation points towards the star Antares, the 'heart of the scorpion'.
The astrological symbol for Sagittarius has a dual meaning. The first and most common is that of a bow and arrow. The second and less well-known is that of an arrow lifting up a cross-shaped burden, representing the struggle the Sagittarius faces.
Sagittarius is ruled by the planet Jupiter, not only one of the most important gods in Roman mythology (ruler of the heavens), but also the planet that signifies good fortune in astrology. 
As the ninth sign in the zodiac, Sagittarius is associated with the astrological 9th house, which is associated with natural Sagittarius matters - foreign travel and foreign countries and cultures, religion, the law and higher education, all things which seek to expand one's experience, freedom, journeys.
There are many variables that determine compatibility in astrology, such as birth dates, birth months, birth years, position of a sign within the Sun, the Moon, Stars, etc. The signs listed as compatible with Sagittarius do not reflect an individual profile or individual reading as interpreted within astrology, but rather reflect a general guideline and reference to compatibility as dictated by variables such as Qualities and Elements within the Zodiac.  The branch of astrology dealing with interpersonal compatibilities is called Synastry.
The following are common associations with the sign of Sagittarius:
For November: Citrine
For December: Turquoise • Zircon • Blue topaz
|Color||Purple • Light blue|
|Body parts||Hips • Thighs|
|Country||Mediterranean climates: Spain • Australia • South Africa • Portugal • Mexico • Arabia|