What happened 31 July 2006 AD in Cuba

On 31 July 2006, Fidel Castro's personal secretary, Carlos Valenciaga, announced on state-run television that Fidel Castro would provisionally hand over the duties of First Secretary of the Communist Party of Cuba (party chief), President of the Council of State of Cuba (head of state), President of the Council of Ministers of Cuba (prime minister), and Commander-in-Chief of the Armed Forces to Raúl Castro while Fidel underwent and recovered from intestinal surgery to repair gastrointestinal bleeding.

Castro underwent surgery for intestinal bleeding, and on 31 July 2006, delegated his presidential duties to Raúl Castro.