Britain's King Charles III and Queen Camilla, wave as they formally bid farewell to Japan's Emperor Naruhito and Empress Masako on the final day of their state visit to Britain at Buckingham Palace, London, Thursday, June 27, 2024. King Charles III is preparing to visit Australia and Samoa in October 2024, an itinerary that will span 12 time zones and test the monarch’s stamina as he recovers from cancer treatment. The trip was announced on Sunday, July 14, 2024, by Buckingham Palace. (Chris Jackson/Pool Photo via AP, File)