380 Theodosius I makes his ''adventus'', or formal entry, into Constantinople.
393 Roman Emperor Theodosius I proclaims his nine year old son Honorius co-emperor.
394 Battle of the Frigidus: The Christian Roman Emperor Theodosius I defeats and kills the pagan usurper Eugenius and his Frankish ''magister militum'' Arbogast.
1896 In Athens, the opening of the first modern Olympic Games is celebrated, 1,500 years after the original games are banned by Roman Emperor Theodosius I.