This is just crazy.. http://www.huffingtonpost.com/2011/01/13/new-zodiac-sign-dates-oph_n_808567.html#s223656&title=MoonGoddess Your zodiac sign may not actually be your zodiac sign anymore. Astronomer Parke Kunkle says that due to changes in the Earth's alignment the dates of many zodiac signs have changed, according to NBC. In addition, there may be a 13th Zodiac sign: Ophiuchus. Kunkle says that as the Earth and Sun slowly move the signs gradually change, as expected. The change didn't happen over night either. The 12 signs were designated to different periods of the year almost 3,000 years ago, when astrology began, and since then the Earth's position in relation to the sun has changed. While the sign many people were born under may now be different, it shouldn't affect horoscope readings, according to NBC. See if your Zodiac sign has changed below. The New Dates: Capricorn: Jan. 20 - Feb. 16 Aquarius: Feb. 16 - March 11 Pisces: March 11- April 18 Aries: April 18 - May 13 Taurus: May 13 - June 21 Gemini: June 21 - July 20 Cancer: July 20 - Aug. 10 Leo: Aug. 10 - Sept. 16 Virgo: Sept. 16 - Oct. 30 Libra: Oct. 30 - Nov. 23 Scorpio: Nov. 23 - Nov. 29 Ophiuchus: Nov. 29 - Dec. 17 Sagittarius: Dec. 17 - Jan. 20