The 1960 Valdivia earthquake and tsunami or the Great Chilean earthquake occurred on 22 May 1960. Most studies have placed it at 9.4–9.6 on the moment magnitude scale, making it the strongest earthquake ever recorded, while some studies have placed the magnitude lower than 9.4. It occurred in the afternoon, and lasted 10 minutes. The resulting tsunamis affected southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeast Australia, and the Aleutian Islands.