September 21 is the 264th day of the year (265th in leap years) in the Gregorian calendar; 101 days remain until the end of the year. == Events == === Pre-1600 === 455 – Emperor Avitus enters Italy with a Gallic army and consolidates his power.
September 21 is the 264th day of the year (265th in leap years) in the Gregorian calendar; 101 days remain until the end of the year. == Events == === Pre-1600 === 455 – Emperor Avitus enters Italy with a Gallic army and consolidates his power.
Source: Wikipedia "September 21" · CC BY-SA 4.0
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