Is the constellation calculated by solar calendar or lunar calendar?

Constellations are calculated according to the Gregorian calendar (Gregorian calendar) date of birth

Aries (March 21-April 20)

Taurus (April 2 1- May 2 1)

Gemini (May 22nd-June 2nd1)

Cancer (June 22-July 22)

Leo (July 23-August 22)

Virgo (August 23-September 22)

Libra (September 23rd-65438+1October 23rd)

Scorpio (65438+1October 24th-165438+1October 22nd)

Sagittarius (165438+1October 23rd-65438+February 2nd1)

Capricorn (65438+February 22nd-65438+1October 20th)

Aquarius (65438+1October 21-February 19)

Pisces (February 20-March 20)