The Supreme Court of the United Kingdom unanimously ruled that advice given by Prime Minister Boris Johnson to Queen Elizabeth II that Parliament should be prorogued was unlawful.
After his neighbor identified handwriting samples placed on local billboards by police, Oba Chandler was arrested three years after he committed a triple murder in the Tampa Bay area in Florida.
Dougal Haston and Doug Scott of the Southwest Face expedition became the first people to reach the summit of Mount Everest by ascending one of its faces.
The Warren Commission released its report to the U.S. president, concluding that Lee Harvey Oswald acted alone in the assassination of John F. Kennedy. The report was made public three days later.
The "Great Smoke Pall", generated by the Chinchaga fire, the largest recorded fire in North American history, was first recorded in present-day Nunavut and may eventually have circled the entire globe.
Operation Barbarossa: A Wehrmacht training event known as the Mogilev Conference began, marking an increase in violence against Jews and other civilians in the areas under General Max von Schenckendorff's command.
Alfred Deakin became the second Australian prime minister, succeeding Edmund Barton, who left office to become a founding justice of the High Court of Australia.