July 25

July 25 is the 206th day of the year (207th in leap years) in the Gregorian calendar. There are 159 days remaining until the end of the year.
Events

285 – Diocletian appoints Maximian as Caesar, co-ruler.
306 – Constantine I is proclaimed Roman emperor by his troops.
315 – The Arch of Constantine is completed near the Colosseum in Rome to commemorate Constantine I's victory over Maxentius at the Milvian Bridge.
864 – The Edict of Pistres of Charles the Bald orders defensive measures against the Viking.
1139 – Battle of Ourique: The Almoravids, led by Ali ibn Yusuf, are defeated by Prince Afonso Henriques.
1261 – The city of Constantinople is recaptured by Nicaean forces under the command of Alexios Strategopoulos, re-establishing the Byzantine Empire.
1278 – The naval Battle of Algeciras takes place in the context of the Spanish Reconquista resulting in a victory for the Emirate of Granada
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