Sagittarius (constellation) points towards the star Antares, the "heart of the scorpion", and Sagittarius stands poised to attack should Scorpius ever attack the nearby Hercules, or to avenge Scorpius's slaying of Orion. , the Sun appears in the constellation Sagittarius from 18 December to 18 January. In tropical astrology, the Sun is considered to be in the sign Sagittarius from 22 November to 21 December, and in sidereal astrology, from 16 December to 14 January. Sagittarius (constellation) Sagittarius is one of the constellations of the zodiac. It is one of the 48 constellations listed by the 2nd-century astronomer Ptolemy and remains one
Ophiuchus (astrology) Ophiuchus (astrology) Ophiuchus (⛎) () has sometimes been used in sidereal astrology as a thirteenth sign in addition to the twelve signs of the tropical Zodiac, because the eponymous constellation "Ophiuchus" ( "Serpent-bearer"), as defined by the 1930 International Astronomical Union's constellation boundaries, is situated behind the sun from November 29 to December 18. The idea appears to have originated in 1970 with Stephen Schmidt's suggestion of a 14-sign zodiac, with it also including Cetus as a sign. A 13-sign zodiac has been suggested by Walter Berg and by Mark Yazaki in 1995, a suggestion that achieved some popularity in