How to divide the sun constellation and the moon constellation ~

Most of the constellations we usually say only refer to the sun constellation, and each constellation lasts for about one month. From the middle of last month to the middle of next month, it is the dividing line of a constellation. Every year, the border is similar, which is easier to find and easier to use. The moon constellation can only be calculated according to the specific date. The Sun Constellation talks about an individual's external character, that is, external performance and external potential. Moon constellation is about inner character, inner potential and inner true tendency.