Please answer the following question: Formulate an answer to this elaborate question: "Empty Eyes" is the eighteenth episode of the seventh season of the television series, CSI: Crime Scene Investigation, the crime portrayed in this episode had many similar elements to the murder of eight student nurses from South Chicago Community Hospital in 1966 by Richard Benjamin Speck,was an American mass murderer who systematically tortured, raped, and murdered eight student nurses from South Chicago Community Hospital on which night?
A:
July 13-14, 1966