Is the constellation according to the new calendar or the old calendar?

Gregorian calendar: Gregorian calendar, national calendar and new calendar.

Lunar calendar: the old calendar

The twelve constellations were introduced into China from the west, belonging to western culture, and are calculated by the solar calendar (the internationally recognized Gregorian calendar). Because westerners don't have a lunar calendar, the birth date of the constellation is based on the solar calendar. If the date is at the junction of two constellations, it should be determined according to the date and time of birth in the solar calendar.

The twelve constellations were originally used for divination, and each pronoun represents a certain direction of the universe. Later, people used to put twelve constellations, representing twelve personalities of people. The birth time of each person, that is, the position of each star on the ecliptic, implies a person's innate character. The twelve constellations can reflect a person's psychological characteristics and symbolically represent a person's life behavior. Finally, the zodiac is divided into twelve constellations, which are called "Zodiac".