September 23 is the 266th day of the year (267th in leap years) in the Gregorian calendar; 99 days remain until the end of the year. == Events == === Pre-1600 === 38 – Drusilla, Caligula's sister who died in June, with whom the emperor is said to have an incestuous relationship, is deified.
September 23 is the 266th day of the year (267th in leap years) in the Gregorian calendar; 99 days remain until the end of the year. == Events == === Pre-1600 === 38 – Drusilla, Caligula's sister who died in June, with whom the emperor is said to have an incestuous relationship, is deified.
Source: Wikipedia "September 23" · CC BY-SA 4.0
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