Fortune Telling Collection - Horoscope - Are the twelve constellations divided by lunar calendar or solar calendar?

Are the twelve constellations divided by lunar calendar or solar calendar?

The twelve constellations are divided according to the solar calendar.

Constellations were spread by the Greeks according to the myth of their god Zeus.

Are all born in the Gregorian calendar.

That is, the Gregorian calendar date 1 year when you were born in China.