Hawaii recorded its hottest day ever at 100°F.
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John Hinckley Jr., President Reagan's failed assassin, pleaded 'not guilty' due to not being mentally sound at trial.
A fireball was spotted over southern Mississippi.
Witold Pilecki escaped Auschwitz.
NASA launched the Explorer 11 satellite atop a Juno II rocket from Cape Canaveral, Florida.
The Australian Labor Party led the world's first Labor Government.