When are the twelve constellations _ When are the twelve constellations?

What is the arrangement time of the twelve constellations?

Aries: March 21-April 20

Taurus: April 2 1-May 21.

Gemini: May 22nd-June 2nd1

Cancer: June 22-July 22?

Leo: July 23rd-August 23rd.

Virgo: August 24-September 23

Libra: September 24th-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

Extended data:

The origin of constellations

The origin of the word "constellation" may be traced back to prehistoric times. At that time, the ancients only used them to tell their own beliefs, experiences, creations or some fairy tales.

With the passage of time, the adoption of constellations has changed greatly, and the size or shape of many constellations has changed greatly, which may be caused by precession (axial precession of the earth).

Among these constellations, 48 traditional western constellations were named during the Greek period, so they are also called Greek constellations. These Greek constellations often appear in Aratus's images and Ptolemy's astronomical masterpieces, but the origin of Greek constellations may be centuries earlier than these works.

1928, the International Astronomical Union (IAU) officially divided and unified the names of 88 modern constellations, accurately divided the boundaries between them, and covered the whole celestial sphere. In the present celestial coordinate system, any point is in a modern constellation (any point in the night is in a known constellation).

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