Following from CH.3:0002] 05h:20m:
The critical time frame starts at 9:00am and ends at 2:20pm when the body is discovered on the bathroom floor. But is it possible to narrow it down further? Yes, it is. Elvis was determined to have died between roughly 9:00am and 11:30am, so we can place the latest time of death at 11:30am. The earliest time of death relies on several external factors, originating from a single point, which I will discuss here shortly.
ElvisDecoded 