Final answer:
Jeffrey Dahmer, the American serial killer, was born on May 21, 1960.
Step-by-step explanation:
Jeffrey Dahmer was born on May 21, 1960. He was an American serial killer and sex offender who committed the murder and dismemberment of 17 young men and boys between 1978 and 1991.
The question about when Dahmer was born is strictly historical, as it pertains to the life events of a historical figure, albeit one with a criminal background.
While Dahmer's life story crosses over with law enforcement and psychological studies, the query in question is solely focused on the factual date of his birth.