The Zuqnin Chronicle is a chronicle written in Syriac about the events from Creation to c.775 CE, with the first part omitting the reign of Constantine the Great while the second part continues with Theodosius II and follows closely the Ecclesiastical History of Socrates of Constantinople.
The first part reaches to the epoch of Constantine the Great, and is in the main an epitome of the Eusebian Chronicle. The "epoch" serves as a reference point from which time is measured. 
