Three things cannot be long hidden:
Gautama Siddharta (563-483BC)
Astrologia, is a greek word that refers to the study of stars. The earliest document available in our western libraries is believed to be from 668-626 BC and it referenced things like: astronomic observations, eclipses, and predictions. The oldest known surviving horoscope ( a chart cast for a human being as opposed to a chart for a city/state/organization) is believed to be from 410 BC.
The largest collection of astrological writings and manuscripts are held in the Vatican.