Are the twelve constellations based on the date of birth or birthday?

Date of birth, that is, birthday in the solar calendar.

Aries March 21~ April 20

Taurus April 2 1 ~ May 21

Gemini from May 22nd to June 2nd1

Cancer June 22 ~ July 22

Leo July 23 ~ August 23

Virgo August 24th to September 23rd.

Libra September 24th ~ 65438+1October 23rd.

Scorpio 65438+1October 24th ~165438+1October 22nd.

Sagittarius165438+1October 23rd to 65438+February 2nd1

Capricorn 65438+February 22nd ~ 65438+1October 20th

Aquarius 65438+1October 21~ February 19

Pisces from February 20th to March 20th.

Extended data:

Constellations were introduced to China from abroad. In fact, there was also a constellation called Twelve Stars in ancient China, which was used to measure the position and movement of the stars, the moon and the sun, and divided the zodiac into twelve parts, so it was called Twelve Stars.

The twelve constellations were originally used for divination, and the pronouns on each constellation represent a certain direction of the universe. Later, people used to put twelve constellations, representing twelve personalities of people.