Question: Aftermath was based on a real life midair plane collision that happened on what date?
Sentence (from "Überlingen mid-air collision"): On 1 July 2002, Bashkirian Airlines Flight 2937, a Tupolev Tu-154 passenger jet, and DHL Flight 611, a Boeing 757 cargo jet, collided in mid-air over Überlingen, a southern German town on Lake Constance, at 23:35 local time.
Relevant evidence: Yes