The Proffesional Astrolger argue hat when these 12 conventional stars were introduced the earh was in a different position with respect to sun as well as moon.
You may loose your orignal stars and have new one, this movement of earth created a 13th star Ophiuchus and to accomodate it in 365 days of the year tha spam of privious 12 stars have been shorten.
It means as i am a taurean now i am not taurean any more, i am Aries now.
Sun is constant at its position but the Earth is constantly moving around it orbit and now its in different position so the stars should change accordingly.
The introduction of 13 star Ophiuchus is not new, it was also present in the findings of ancien astrologers as well as. Its sighn or animal is still not confirmed yet.
To find your new star read the information below.
New Dates of 13 Signs
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
: 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
What is your new sign? do comment.