Washington, Jan 15 (IANS) Astronomers suggest an overhaul in the process of defining horoscope on the basis of one’s birth date as the earth’s position vis-a-vis the sun and other stars has changed since the astrological signs were determined over 2,000 years ago.

Apart from the existing 12 astrological signs, the experts include a 13th sign Ophiuchus, a formation which the ancient Babylonians discarded because they wanted 12 star signs.

According to astronomers, the ‘real’ dates of all the 12 astrological signs will be altered for about a period of 30 days.

Here are the ‘real’ dates of astrological signs:

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 Sep 16.

Virgo: Sep 16 to Oct 30.

Libra: Oct 30 to Nov 23.

Scorpio: Nov 23 to 29.

Ophiuchus: Nov 29 to Dec 17.

Sagittarius: Dec 17 to Jan 20.