What are the rules for choosing a wedding date?

1, avoid the days of sand and Yang Gongbi for three years. Sanniang Day is the Sanniang Day of every month. Sannianzi is also called "the day when women are forbidden", that is, the day when it is not suitable for marriage. 2. Avoid the days of 379. The date of 379 is the seventh, seventeenth, twenty-seventh and thirty-seventh of the lunar calendar. These four days, called "April 7th", are days when people are forbidden to get married. Because "July" is homophonic with "wife" and "nine" is homophonic with "long", which are all unlucky days. 3. Avoid Sannianzi and Yang Gongbi. Sanniangsha refers to Sanniangsha Day and the anniversary of Yang Gong's death every month. Sanniangsha is an unlucky day, and Yang Gongbi is an unlucky hour.