Is it so good that the wedding day is mom's 60th birthday?

Yes, it's a double happiness. In my opinion, you think these things are complicated by yourself, or you are greatly influenced by the constellation theory of Hong Kong and Taiwan. Isn't it just getting married? Is it necessary to consider so much? As long as everyone can arrange the time, as long as it is an auspicious date, there is no need to make it so complicated. Marriage is a combination of love, not superstition.