Can the fixed wedding date be changed? How to calculate the wedding date?

Hello, this can be changed, but it is best to change it one day in advance, not on the wedding day, because the wedding day is very busy. A good calculation method of wedding date is to divide the total life span of both men and women by 4, take the remainder, and add 7 as the appropriate wedding date. If the man's life is and the woman's life is, you can divide it by 4 to get the remainder, and the remainder is 3, then the appropriate wedding date is. If the man's life is, and the woman's life is, divide it by 4 to get the remainder, and the remainder is 1, and the appropriate wedding date is. If the man's age is 0 and the woman's age is 0, you need to divide by 5 to get the remainder, and the remainder is 4, so the appropriate wedding date is 0.