Astronauts Gus Grissom, Edward White and Roger Chaffee are killed in a fire during a test of the Apollo 1 spacecraft at the Kennedy Space Center in Florida. Although the ignition source of the fire is never conclusively identified, the astronauts' deaths are attributed to a wide range of design hazards in the early Apollo command module, including the use of a high-pressure 100 percent-oxygen atmosphere for the test, wiring and plumbing flaws, flammable materials in the cockpit, an inward-opening hatch, and the flight suits worn by the astronauts.

St. Peterburg, the Russian city founded by Peter the Great in 1703, and which was capital of the Russian Empire for more than 200 years, is renamed Leningrad three days after the death of Vladimir Lenin. The city had already been renamed Petrograd in 1914. It was finally given back its original name St. Petersburg in 1991.

In Australia, siblings Jane Nartare Beaumont, Arnna Kathleen Beaumont, and Grant Ellis Beaumont, aged 9, 7, and 4, disappear from Glenelg Beach near Adelaide, and are never seen again. Witnesses claim to have spotted them in the company of a tall, blonde man, but over the years, after interviewing many potential suspects, police are unable generate enough solid leads to result in an arrest. The disappearances remain Australia's most infamous cold case.

At the Hollywood Athletic Club in Los Angeles, California, the Academy of Television Arts & Sciences presents the first Emmy Awards. The name Emmy was chosen as a feminization of "immy", a nickname used for the image orthicon tubes that were common in early television cameras.

Charles Manson and three female members of his "family" are found guilty of the 1969 Tate-LaBianca murders, which Manson orchestrated in hopes of bringing about Helter Skelter, an apocalyptic war he believed would arise between blacks and whites.