Is the constellation based on birthday or _ is the constellation based on birthday or constellation?

Is the constellation based on birthday or

Constellation is calculated according to the date of my birth in the solar calendar (new calendar, national calendar, Gregorian calendar and western calendar).

12 constellation date division table

Aries: March 2 1 _ _ April 19

Taurus: April 20th _ _ May 20th.

Gemini: May 2 1 _ _ June 2 1

Cancer: June 22nd _ _ July 22nd.

Leo: July 23rd _ _ August 22nd.

Virgo: August 23rd _ _ September 22nd.

Libra: September 23rd _ _ 65438+1October 23rd.

Scorpio: 65438+1October 24th _ _165438+1October 22nd.

Sagittarius:165438+1October 23rd _ _ 65438+February 2nd1.

Capricorn: 65438+February 22nd _ _ 065438+ 10/9.

Aquarius: 065438+1October 20th _ _ February 18

Pisces: February19 _ _ March 20th.