What is the ruling on determining personality by birth date, which is widespread in forums?

Knowing or analyzing personality through one's birth date is ignorance, sorcery, and astrology, because adding or multiplying numbers does not yield meaning or measure happiness or misery. This is a shot in the dark and speaking about God without knowledge. Therefore, it is not permissible to do these things, which have no basis in religion or rational sciences, nor is it permissible to believe them, for no one knows the unseen except Allah. These are contemporary forms of the forbidden astrology, and everything related to astrology contradicts creed.