How to divide the zodiac?

Different calculation methods of zodiac and constellation.

Zodiac is used by some ethnic groups in China and East Asia to indicate the year and the year when a person was born. Zodiac, namely: mouse, ox, tiger, rabbit, dragon, snake, horse, sheep, monkey, chicken, dog and pig.

This constellation is based on the 47 constellations mentioned in Articles written by the Greek poet Aratus in 270 BC. According to the star regions recorded in Celestial Bodies, due to precession, the Antarctic in the period described in the book is not consistent with the current Antarctic, so it can be inferred that the starry sky recorded in the book is before 2000 BC; At the same time, the blank area of the starry sky record indicates that the observer should be near 35 to 36 north latitude. So some people think that the practice of dividing the starry sky into constellations originated from Babylon and Sumer in Mesopotamia, and the constellations of Greece and Egypt may have been introduced from this area.

The ancient Greek poets Homer and hesiod also mentioned Ursa major, Orion and the Pleiades (the Pleiades was considered as an independent constellation at that time, not a part of Taurus), and at the same time, Babylon had recorded the zodiac in cuneiform.

Constellation symbol? 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 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)