About the day » Saturday April 20, 1957Calender converter

• Patricia Kay Denison, Elkhart, Elkhart County, Indiana, Verenigde Staten († 2012)
• Jenze Jan Coumou († 1970)
• Debra Marie Hagedorn, Buffalo, New York († 2022)
• Marie-Claire Mesotten, Genk, België († 2008)
• Cornelia Martina Antonia Vissers, Berkel-Enschot († 1958)
• Maria Helena Johanna Van Houten, Den Haag, Zuid-Holland, Netherlands
• Jeanette Klasina Kikkert, Den Hoorn (Texel, NH) († 1976)
• Martha Jacoba Kikkert, Den Hoorn (Texel, NH) († 2022)
• Maria Johanna Clementina Vranken, Heerlen
• John Atkinson († 1957)

• Cornelis Groenendijk (52), Rotterdam, Zuid-Holland, Nederland
• Alida Henderika Renken (76), Groningen
• Annigje Brandligt (69), Kampen
• Catharina Berendina Slotboom (76), Lammersbosch (Woold)
• Cornelis Groenendijk (52), Rotterdam Zuid-Holland Nederland
• Arie Bosch (70)
• Audrey Lee Boyce (29)
• Drieka van de Camp (75), Oss
• Adriana Klapwijk (65), Rotterdam, Nederland
• Cornelis Johannes Wijkmans (78), Utrecht, Nederland

• 1953 » Sebastian Faulks, English journalist and author
• 1955 » Donald Pettit, American engineer and astronaut
• 1956 » Beatrice Ask, Swedish politician, Swedish Minister for Justice
• 1956 » Georgie Glen, Scottish actress
• 1956 » Kakha Bendukidze, Georgian economist and politician
• 1956 » Peter Chelsom, English film director, writer, and actor
• 1958 » Viacheslav Fetisov, Russian ice hockey player and coach
• 1959 » Perry Haddock, Australian rugby league player
• 1960 » Debbie Flintoff-King, Australian hurdler and coach
• 1961 » Don Mattingly, American baseball player, coach, and manager

• 1942 » Jüri Jaakson, Estonian businessman and politician, 6th State Elder of Estonia (b. 1870)
• 1944 » Elmer Gedeon, American baseball player and pilot (b. 1917)
• 1945 » Erwin Bumke, Polish-German jurist and politician (b. 1874)
• 1946 » Mae Busch, Australian actress (b. 1891)
• 1947 » Christian X of Denmark (b. 1870)
• 1951 » Ivanoe Bonomi, Italian politician, 25th Prime Minister of Italy (b. 1873)
• 1961 » Ado Vabbe, Estonian painter (b. 1892)
• 1967 » Léo-Paul Desrosiers, Canadian journalist and author (b. 1896)
• 1968 » Rudolph Dirks, German-American illustrator (b. 1877)
• 1969 » Vjekoslav Luburić, Croatian Ustaše official and concentration camp administrator (b. 1914)

• 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 October 13, 1956 to December 22, 1957 the cabinet Drees III, with Dr. W. Drees (PvdA) as prime minister.
• The Netherlands had about 11.0 million citizens.
• March 8 » Egypt re-opens the Suez Canal after the Suez Crisis.
• September 4 » American Civil Rights Movement: Little Rock Crisis: Orval Faubus, governor of Arkansas, calls out the National Guard to prevent African American students from enrolling in Central High School.
• September 4 » The Ford Motor Company introduces the Edsel.
• September 5 » Cuban Revolution: Fulgencio Batista bombs the revolt in Cienfuegos.
• October 14 » At least 81 people are killed in the most devastating flood in the history of the Spanish city of Valencia.
• November 8 » Pan Am Flight 7 disappears between San Francisco and Honolulu. Wreckage and bodies are discovered a week later.

The temperature on April 20, 1957 was between 2.1 °C and 12.7 °C and averaged 8.1 °C. There was 8.9 hours of sunshine (63%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast.