Is the constellation according to the lunar calendar or the solar calendar?

Constellations are calculated according to the solar calendar (new calendar).

The knowledge of constellations originated from Babylon, one of the four ancient civilizations. At that time, they divided the sky into many areas and called them "constellations". But westerners usually say that birthdays are based on the solar calendar (new calendar), so constellations are calculated according to the solar calendar.

Babylonians made a long-term prediction of these constellations, determined the ecliptic through observation, and divided it into 12 equal parts, which became the "zodiac".

These zodiac signs are named after the 12 constellation respectively. Starting from the vernal equinox, counterclockwise is Aries (Aries), Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius (Sagittarius), Capricorn, Aquarius (Aquarius) and Pisces.

Extended data:

Date division of constellations:

1, Aries: March 21~ April 20

2. Taurus: April 2 1 ~ May 21.

3. Gemini: May 22nd to June 2nd1.

4. Cancer: June 22nd to July 22nd.

5. Leo: July 23rd to August 22nd.

6. Virgo: August 23rd to September 23rd.

7. Libra: September 24th ~ 65438+1October 23rd.

8. Scorpio: 65438+1October 24th ~165438+1October 22nd.

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

10, Capricorn: 65438+February 22nd ~ 65438+1October 20th.

1 1, Aquarius: 65438+1October 21~ February 19.

12, Pisces: February 20th to March 20th.