About the day » Friday May 20, 1966Calender converter

• Esther Boekschoten
• Marinus Marc (Marc) Hobers, Emmen
• Francisca Reinders
• Marcus Duncan Birrell († 1988)
• Ronny Westgeest, Valkenburg († 1998)
• Lindsay Paul Elvins Gofton, , Australië († 1966)
• William Charles Lebeau, Edson, Yellowhead, Alberta, Canada († 1987)
• Henk Baar († 1966)
• Koen Moons, Lier († 1986)
• Els Peel, Veurne

• Catharina Maria Martina Vogelzang (60), Enkhuizen, Noord-Holland, Nederland
• Catharina Mekkes (87), Fort Macleod, Willow Creek, Alberta, Canada
• Anthonetta Wilhelmina Cenin (160), Delft, Zuid-Holland, Nederland
• Alice Maria Boel (73)
• Auke~Sikkes Feenstra (69), Groningen
• Barend Teko van Meurs (65), Amsterdam
• Abraham Verhoeve (71), Garfield, Bergen, New Jersey, V.S
• Auke Sikkes Feenstra (69), ,,, Groningen, Groningen, Netherlands
• Cornelis johannes VAN DUN (79), Ulvenhout, Breda, Province of North Brabant, Netherlands
• Constantien Monier (79), Aspelare

• 1963 » David Wells, American baseball player and sportscaster
• 1964 » Charles Spencer, 9th Earl Spencer, English journalist and author
• 1964 » Edin Osmanović, Slovenian footballer, coach, and manager
• 1964 » Kōichirō Genba, Japanese politician, 80th Japanese Minister for Foreign Affairs
• 1965 » Stu Grimson, Canadian ice hockey player, sportscaster, and lawyer
• 1965 » Ted Allen, American television host and author
• 1966 » Dan Abrams, American journalist and author
• 1967 » Gabriele Muccino, Italian director, producer, and screenwriter
• 1967 » Graham Brady, English politician
• 1968 » Timothy Olyphant, American actor and producer

• 1956 » Max Beerbohm, English essayist, parodist, and caricaturist (b. 1872)
• 1956 » Zoltán Halmay, Hungarian swimmer and trainer (b. 1881)
• 1961 » Josef Priller, German colonel and pilot (b. 1915)
• 1964 » Rudy Lewis, American singer (b. 1936)
• 1971 » Waldo Williams, Welsh poet and academic (b. 1904)
• 1973 » Jarno Saarinen, Finnish motorcycle racer (b. 1945)
• 1973 » Renzo Pasolini, Italian motorcycle racer (b. 1938)
• 1975 » Barbara Hepworth, English sculptor and lithographer (b. 1903)
• 1976 » Syd Howe, Canadian ice hockey player (b. 1911)
• 1976 » Zelmar Michelini, Uruguayan journalist and politician (b. 1924)

• Koningin Juliana (Huis van Oranje-Nassau) was from September 4, 1948 till April 30, 1980 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from April 14, 1965 to November 22, 1966 the cabinet Cals, with Mr. J.M.L.Th. Cals (KVP) as prime minister.
• In The Netherlands , there was from November 22, 1966 to April 5, 1967 the cabinet Zijlstra, with Prof. dr. J. Zijlstra (ARP) as prime minister.
• The Netherlands had about 12.4 million citizens.
• March 19 » 1965–66 Texas Western Miners men's basketball team wins the NCAA Division I Men's Basketball Tournament.
• June 13 » The United States Supreme Court rules in Miranda v. Arizona that the police must inform suspects of their rights before questioning them.
• July 15 » Vietnam War: The United States and South Vietnam begin Operation Hastings to push the North Vietnamese out of the Vietnamese Demilitarized Zone.
• August 16 » Vietnam War: The House Un-American Activities Committee begins investigations of Americans who have aided the Viet Cong. The committee intends to introduce legislation making these activities illegal. Anti-war demonstrators disrupt the meeting and 50 people are arrested.
• October 4 » Basutoland becomes independent from the United Kingdom and is renamed Lesotho.
• November 2 » The Cuban Adjustment Act comes into force, allowing 123,000 Cubans the opportunity to apply for permanent residence in the United States.

The temperature on May 20, 1966 was between 4.7 °C and 15.9 °C and averaged 11.3 °C. There was 0.2 mm of rain during 0.3 hours. There was 13.3 hours of sunshine (84%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west.