Is the constellation a national calendar or a lunar calendar? Who knows?

Constellation is an astrological theory from the west, which is based on western astronomical astrology. Western astronomical astrology studies the so-called potential relationship between astronomy and human beings, and between human beings and luck on the premise of a calendar based on the year of AD. Therefore, it is natural to talk about constellations in terms of the internationally used calendar year, that is, the Gregorian calendar. However, through the latest perpetual calendar query, we can find the Gregorian calendar corresponding to the lunar calendar of that year. After the lunar calendar is converted into the corresponding Gregorian calendar, we can easily query the corresponding constellation.