See whether the marriage is based on the lunar calendar or the solar calendar, and whether the zodiac pairing is based on the Gregorian calendar or the lunar calendar.

Marriage is generally based on the solar calendar, because the solar calendar is a commonly used modern date calculation method, and it is also convenient to be in line with international standards. Zodiac pairing can be based on Gregorian calendar or lunar calendar, because the chronology of zodiac years is based on the lunar calendar of the twelve branches, and it can also be converted into Gregorian calendar dates for pairing.