Sagittarius () is the ninth astrological sign in the Zodiac, which spans the zodiac between the 240th and 269th degree of celestial longitude. In the Tropical zodiac, the Sun transits this area of the zodiac from November 22 to December 21 each year. In Sidereal astrology, the sun currently transits the constellation of Sagittarius from December 16 to January 14 (approximately).
Sagittarius is seasonally associated with the transition from autumnal moisture to mid-winter dryness. Because its period indicates a change of season, it is known as a "mutable sign"  describing an instinct toward change and an easy ability to modify or adapt to the demands of the environment.
The sign is governed by Jupiter, a planet which is symbolically associated with temperate qualities which loosen, relax and expand. Sagittarius is also linked with the "element of fire," which represents outgoing, action-oriented energy that seeks spontaneous expression. As the mutable fire sign, governed by an expansive planet, the symbolic focus of the sign is connected to the principle of exploration and evolution. Correspondingly, Sagittarians are reputed to be drawn toward travel and philosophy, and to enjoy social contacts, meeting new people and exploring other cultures. They are said to be highly intelligent, broad-visioned, tolerant in their views, mainly concerned with the "big picture" but with little patience for the details.
Joanna Watters (2003) defined a key phrase for this sign as "I seek" and describes Sagittarius as "the sign of the higher mind ... the pursuit of wisdom and search for meaning are just as important as new places and experiences". Like all the fire signs, Sagittarius can be idealistic in vision but tactless in expression. They are known for their bluntness and are often unaware of their ability to cause anguish in others.
Generally, the qualities of Sagittarius are considered to be compatible with these signs: Aries, Leo, and Gemini and to a lesser extent with these signs: Taurus and Virgo. Compatibility based on sun-sign alone is considered to be only a very general guideline. The branch of astrology dealing with interpersonal relationships is called Synastry. In this, astrologers analyse the horoscopes of both parties being considered with particular reference to the positions of the Sun and Moon, and Venus and Mars.
See main article: Sidereal and tropical astrology. The dates that the Sun traverses the sign of Sagittarius according to the Sidereal system are (generally) between 15 of December and 14 January each year.