Is the constellation based on the new calendar or the old calendar?

Constellations are calculated according to the Gregorian calendar, that is, the new calendar, because constellations were introduced from the west, and the west only has the Gregorian calendar. Only China has the difference between the Gregorian calendar and the lunar calendar, so we must use the lunar calendar in China to calculate the zodiac and the Gregorian calendar to calculate the constellation. If you want to count the luck of fleeting time, in fact, China's zodiac is much more powerful than the West. Some foreigners in the west also believe in China's geomantic calendar.