I quess we have 13 zodiac signs not 12 , so its could be wrong. the angle of inclination of our planet is rotting & the Ophiuchus sign completely includes in the meridian .
Capricorn: Jan. 20 to Feb. 16
Aquarius: Feb. 16 to March 11
Pisces: March 11 to April 18
Aries: April 18 to May 13
Taurus: May 13 to June 21
Gemini: June 21 to July 20
Cancer: July 20 to Aug. 10
Leo: Aug. 10 to Sept. 16
Virgo: Sept. 16 to Oct. 30
Libra: Oct. 30 to Nov. 23
Scorpio: Nov. 23 to Nov. 29
Ophiuchus: Nov. 29 to Dec. 17
Sagittarius: Dec. 17 to Jan. 20
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