An estimated worldwide television audience of 750 million watched the wedding of Prince Charles and Lady Diana Spencer (combined coat of arms pictured) at St Paul's Cathedral in London.
Korean War: Over fears that North Korean soldiers were infiltrating refugee columns, U.S. forces concluded a four-day massacre of hundreds of civilians through shootings and air attacks near the village of Nogeun-ri.
The Essential Commodities Reserves Act, which allowed the British government to build up reserves of essential commodities in anticipation of war, received royal assent.
In a case later termed a "legal lynching", Will P. Brady obtained a guilty verdict and death sentence against 15-year-old León Martínez Jr., five days after his arrest for killing a white woman.
French physicist Augustin-Jean Fresnel submitted a memoir on the diffraction of light to the Royal Academy of Sciences, providing strong support for the wave theory of light.