The first atomic bomb used in human history by the US military B-29 Enola Gay, which flew from Tinian Island, detonated about 600 meters above the island. This area, located directly below the hypocenter, was hit with heat rays of approximately 3,000 to 4,000 degrees, blast waves, and radiation, and most of the people's lives were instantly taken away. It was 8:15 a.m. on August 6, 1945.