How is the constellation 12 calculated?

Constellations are calculated according to the birthday of the Gregorian calendar (new calendar \ Gregorian calendar).

Aries: March 21~ April 20

Taurus: April 2 1 to May 2 1.

Gemini: May 22nd to June 2nd1

Cancer: June 22nd to July 22nd.

Leo: July 23rd to August 23rd.

Virgo: August 24th to September 23rd.

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

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

Sagittarius:165438+1October 23rd to 65438+February 2nd1

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

Aquarius: 65438+1October 21~ February 19

Pisces: February 20th to March 20th.

Ptolemy should have done the earliest and complete explanation of constellations in history.

Ptolemy (Clandius

Ptolemy (about 90 ~ 168), also translated as Ptolemy or Duolumou, is said to have been born in the Hellenistic city of Egypt. Ancient Greek astronomer, geographer and optician.

It can be seen from the above information that he is Greek, so he should use Greek calendar or Gregorian calendar. He was born in about 90- 168, which was the time when the Gregorian calendar was widely used in Europe, so his constellation calculation at that time should be based on the Gregorian calendar, not the Greek calendar, which was more detailed than the China calendar.

Therefore, the calculation of the constellation should be based on the date of the solar calendar.