What does superstition 3.6.9 mean to walk home?

It refers to the lunar calendar, and every month is a day to go home. For example, look at the date before going home, and then go home on the day of 3 6 9, the third day, the sixth day, the ninth day, the thirteenth day and the sixteenth day of the lunar calendar, and so on, which is equivalent to looking at the yellow calendar, what to do and what not to do.