Holy shit 1962 .. before the Cuban Missile Crisis in 1963?
From pinktentacle.com:
Japanese artist Isao Hashimoto’s “1945-1998” is an animated map showing the 2,053 nuclear explosions that took place around the world during the 20th century, from the detonations at Alamogordo, Hiroshima and Nagasaki in 1945 to the tests conducted by India and Pakistan in 1998.
Skip to the 12 minute mark for a summary and fallout map.. but the video shows you each month of each year since 1945.