Are the twelve constellations based on the lunar calendar or the Gregorian calendar?

The twelve constellations are birthdays according to the Gregorian calendar.

The solar calendar takes one year as the time for the earth to go around the sun. Its length is 365 days, 5 hours, 48 minutes and 46 seconds. Because it is not an integer, in order to balance the length, some years are 366 days, called "leap year"; Some years are 365 days and are called "average years".

The lunar calendar is based on the cycle of the moon, which is the new moon. The main feature of the lunar calendar is that the length of the calendar month is determined according to the astronomical phenomena, that is, the phase of the moon, with the big moon on the 30th and the small moon on the 29th.

The twelve constellations were introduced into China from the west, belonging to western culture, and are calculated by the solar calendar (the internationally recognized Gregorian calendar).

Extended data:

In western astrology, the zodiac 12 is synonymous with the orientation of the universe. As soon as a person is born, the stars fall into the ecliptic position.

Zodiac (12): Cancer, Aries, Gemini, Aquarius, Virgo, Leo, Taurus, Pisces, Capricorn, Scorpio, Libra and Sagittarius.

Twelve constellations sort:

Aries: March 21-April 19.

Taurus: April 20th-May 20th.

Gemini: May 2 1-June 21.

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 2nd1.

Sagittarius:165438+1October 22nd-65438+February 2nd1.

Capricorn: 65438+February 22nd -65438+ 10/9.

Aquarius: 65438+1October 20th-February 18

Pisces: February19-March 20.