Between 210 and 200 B.C.: Agatharchides is born in Cnidus
Soon after 200 B.C.: He moved to Alexandria under undetermined conditions
Around 180 B.C.: He becomes the secretary of Heracleides οf Lembus, one of the “philoi” (friends) of Ptolemy VII. He begins composing his historical and geographical works
170-160 B.C.: As a secretary of Heracleides of Lembus, an important person in the court of Ptolemy VII and ambassador of Syria, he participates in the peace negotiations with Antiochus IV
After 145 B.C.: Ptolemy VIII Physcon rose to the throne of Egypt, the tone abruptly changed for the scholars and Agatharchides was forced to leave the country for an unknown direction
132/1 B.C.: Agatharchides is 75 years old. He dies a little later