August 17
August 17 is the 229th day of the year (230th in leap years) in the Gregorian calendar; 136 days remain until the end of the year. == Events == === Pre-1600 === 986 – Byzantine–Bulgarian wars: Battle of the Gates of Trajan: The Bulgarians under the Comitopuli Samuel and Aron defeat the Byzantine forces at the Gate of Trajan, with Byzantine Emperor Basil II barely escaping.