Does the constellation look at the ID card or the actual birthday?

Constellations are based on the actual solar calendar birthday, because constellations belong to foreigners; The zodiac is based on the actual lunar birthday, because it comes from China.

Constellation is an indispensable part of astrology and a group of stars in the sky. Since ancient times, human beings have associated three or five stars with their mythical figures or artifacts, which are called "constellations".

From 65438 to 0930, the International Astronomical Union divided the sky into 88 official constellations, which had precise boundaries and were based on ancient Greek myths handed down from the Middle Ages. These constellations are widely used in the field of navigation, and they are almost the means to determine the orientation of the sky in all civilizations.

Mesopotamian astrologers divided the starry sky into several regions for the convenience of studying and observing many stars in the sky, and each region was a constellation. It's hard to say clearly when humans began to have the concept of constellation. This astronomical knowledge was known long before there was a historical record. The name of the constellation probably comes from the sailors who sailed early.

The origin of constellations may be completely different between civilizations in different regions, but with the expansion and mutual influence of civilizations, the culture of constellations also includes the process of integration.