What is the constellation based on?

Is calculated according to the Gregorian calendar, that is, the Gregorian calendar, which is specifically divided into

People born from March 2 1 to April 19 are Aries;

People born from April 20th to May 20th are Taurus.

The person born on May 2 1-June 21is a Gemini;

People born from June 22nd to July 22nd are cancer.

People born from July 23rd to August 22nd are Leo.

People born from August 23rd to September 22nd are Virgos.

People born on September 23rd-65438+1October 23rd are Libras;

65438+1October 24th-165438+1October 22nd is Scorpio;

165438+1October 23rd-65438+February 2nd1is Sagittarius;

65438+February 22nd-65438+1October 19 is Capricorn;

65438+1People born from October 20th to February 18 are Aquarius;

19 People born from February to March 20th are Pisces.