Is' birthday' a horoscope?

Heavenly stems and earthly branches represent years, months and hours respectively. Together, it is eight characters. Because the ancients wrote vertically, the year, month and hour looked like four pillars, so they were also called four pillars. The eight-character study is also called the four-column study, and the eight-character fortune-telling is also called the four-column prediction. Eight characters is a person's life password. People who master this technology can decipher it and tell a person's ancestors, parents, spouses and children.