In astronomy, Sagittarius is the ninth astrological sign in the zodiac based on a tropical astronomical coordinate system; it occupies 240–270 degrees of celestial longitude. Under the sidereal zodiac, the sun transits this area between December 16 and January 14. It is symbolized by an archer in its Greek/Western representation and a centaur with a drawn bow in its Babylonian one. Sagittarius is a positive (extrovert) fire sign ruled by Jupiter. Its glyph of an arrow can sometimes signify an aspiration or ideal goal which can sometimes also include the aspiration towards wisdom for self and others.