305 CE
May 1
May 1
Diocletian announces his resignation. Maximian follows suit. Constantius and Galerius are promoted to Augusti, while Severus II and Maximinus are appointed Caesars.
305 CE
June
June
Constantius requests his son Constantine I join him in Britain. Galerius grants the request after drinking heavily.
306 CE
October 28
October 28
Maxentius, jealous of the power of Constantine the Great, seizes the title of Emperor. Galerius refuses to recognize him, but is powerless to stop him.
308 CE
November 11
November 11
Galerius calls a council to discuss the disruptive western provinces. Diocletian and Maximian attend. Maximian is forced to abdicate and Constantine the Great is demoted to Caesar under the new Augustus Licinius.
311 CE
April 30
April 30
Galerius posts a letter declaring an end to religious persecutions.