The King Bhumibol Adulyadej Memorial Birthday or Father's Day in Thailand
2004 – The Civil Partnership Act comes into effect in the United Kingdom, and the first civil partnership is registered there.
1964 – Lloyd J. Old discovered the first linkage between the major histocompatibility complex (MHC) and disease—mouse leukemia—opening the way for the recognition of the importance of the MHC in the immune response.
1964 – Vietnam War: For his heroism in battle earlier in the year, Captain Roger Donlon is awarded the first Medal of Honor of the war.
1958 – The Preston By-pass, the UK's first stretch of motorway, opens to traffic for the first time. (It is now part of the M6 and M55 motorways.)
1955 – The American Federation of Labor and the Congress of Industrial Organizations merge and form the AFL–CIO.
1933 – The Twenty-first Amendment to the United States Constitution is ratified.
1932 – German-born Swiss physicist Albert Einstein is granted an American visa.
1848 – California Gold Rush: In a message to the United States Congress, U.S. President James K. Polk confirms that large amounts of gold had been discovered in California.
1766 – In London, auctioneer James Christie holds his first sale.
1492 – Christopher Columbus becomes the first European to set foot on the island of Hispaniola (now Haiti and the Dominican Republic).
1990 – Montee Ball, American football player
1986 – Justin Smoak, American baseball player
1986 – LeGarrette Blount, American football player
1985 – Frankie Muniz, American actor, drummer, and race car driver
1982 – Eddy Curry, American basketball player
1982 – Trai Essex, American football player
1979 – Nick Stahl, American actor and producer
1978 – Neil Druckmann, American video game designer and author
1976 – Amy Acker, American actress
1976 – Rachel Komisarz, American swimmer and coach
1975 – Paula Patton, American actress
1974 – Brian Lewis, American sprinter
1974 – Charlie Batch, American football player and sportscaster
1972 – Cliff Floyd, American baseball player and sportscaster