August 15 is the 227th day of the year (228th in leap years) in the Gregorian calendar; 138 days remain until the end of the year. == Events == === Pre-1600 === 636 – Arab–Byzantine wars: The Battle of Yarmouk between the Byzantine Empire and the Rashidun Caliphate begins.
August 15 is the 227th day of the year (228th in leap years) in the Gregorian calendar; 138 days remain until the end of the year. == Events == === Pre-1600 === 636 – Arab–Byzantine wars: The Battle of Yarmouk between the Byzantine Empire and the Rashidun Caliphate begins.
Source: Wikipedia "August 15" · CC BY-SA 4.0
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