July 16, 1945 at the Trinity Test Site in the Jornada del Muerto in New Mexico.
The location is now within White Sands Missile Range and is not accessible to the public, except twice a year when tours of the site are conducted.
The first atomic bomb detonated was not dropped, it was hung from the top of a steel structure and detonated remotely.
USSR
The first atomic bomb was detonated on July 16, 1945, during the Trinity test in New Mexico as part of the Manhattan Project.
Trinity Site, NM, 1945
The second was detonated three days after.
The first successful hydrogen bomb was detonated (not launched or dropped--it was a 62-ton fixed structure) on November 1, 1952.
The first atomic bomb was detonated on the city of Hiroshima, Japan
The US needed a place to test the bomb, and the desert in New Mexico was the best place.
It is the name given to the first experimental atom bomb that was detonated in the deserts of new mexico
Trinity site near Alamogordo, New Mexico.
ENIAC was first used in calculations for the hydrogen bomb
Atom bomb dropped in Japan by the U.S. during WWII