About the day » Wednesday September 25, 1940Calender converter

• Adrianus Cornelis Bouwmeester, Abbenes, Haarlemmermeer, Noord-Holland, Netherlands († 1943)
• Henri van de Ven, Zeist, Utrecht, Netherlands († 2020)
• Betty Joan Fetterhoff, Grand Rapids-Michigan (USA) († 2005)
• Carol COOPER, Middlesex, England († 2008)
• Hans-Gerd Servaes, Wankum, Deutschland († 2016)
• Franciscus Huisman, Heemskerk, Noord-Holland, Nederland († 2013)
• Elisius Cornelis van Osch, Zaltbommel († 1942)
• Hans Kruger, Santpoort, Velsen, Noord-Holland, Nederland († 2003)
• Anthonius Arnoldus Gerardus van Loenen, Schipluiden († 1942)
• Delbert Brouwer († 1970)

• Antonia Johanna Janssen (63), Eindhoven
• Antoinette PAILLER (40), DAMPNIAT 19
• Anna Maria Margaretha Claessen (77), Elsloo (Stein), Limburg, Nederland
• Anna Maria Margaretha CLAESSENS (77), Elsloo,, Limburg, Nederland
• Albert Lodewijk Govert Alfons VAN DER STRATEN-WALLAY (62), Brussels Brussels Belgium
• Abel ZUIDEMA (74), Ellerhuizen Groningen Netherlands
• Albertus van Kreij (86), Schaijk, Noord-Brabant, Nederland
• Antonio Gonçalves de Souza Guimarães (52), Brasil
• Albertus Kerkdijk (79), Vriezenveen, Overijssel, Nederland
• Antje Zijlstra (80), Haarlem, Haarlem, Noord-Holland, Netherlands

• 1938 » Enn Tarto, Estonian politician
• 1938 » Jonathan Motzfeldt, Greenlandic priest and politician, 1st Prime Minister of Greenland († 2010)
• 1938 » Ron Hill, English runner and businessman
• 1939 » David S. Mann, American lawyer and politician, Mayor of Cincinnati
• 1939 » Feroz Khan, Indian actor, director, and producer († 2009)
• 1939 » Leon Brittan, English lawyer and politician, Secretary of State for Business, Innovation and Skills († 2015)
• 1940 » Tim Severin, Indian-English explorer, historian, and author
• 1941 » Vivien Stern, Baroness Stern, English academic and politician
• 1942 » Oscar Bonavena, Argentinian boxer († 1976)
• 1942 » Robert Miano, American actor and producer

• 1926 » Herbert Booth, English songwriter and bandleader (b. 1862)
• 1928 » Richard F. Outcault, American cartoonist, created The Yellow Kid and Buster Brown (b. 1863)
• 1929 » Miller Huggins, American baseball player and manager (b. 1879)
• 1933 » Ring Lardner, American journalist and author (b. 1885)
• 1939 » Ali Saip Ursavaş, Turkish soldier and politician (b. 1885)
• 1941 » Foxhall P. Keene, American polo player, golfer, and race car driver (b. 1867)
• 1943 » Alexander Hall, Scottish-Canadian soccer player (b. 1880)
• 1946 » Hans Eppinger, Austrian physician (b. 1879)
• 1955 » Martha Norelius Swedish-born American swimmer (b. 1909)
• 1958 » John B. Watson, American psychologist and academic (b. 1878)

• Koningin Wilhelmina (Huis van Oranje-Nassau) was from 1890 till 1948 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from August 10, 1939 to September 3, 1940 the cabinet De Geer II, with Jonkheer mr. D.J. de Geer (CHU) as prime minister.
• In The Netherlands , there was from September 3, 1940 to July 27, 1941 the cabinet Gerbrandy I, with Prof. dr. P.S. Gerbrandy (ARP) as prime minister.
• The Netherlands had about 8.8 million citizens.
• February 29 » In a ceremony held in Berkeley, California, physicist Ernest Lawrence receives the 1939 Nobel Prize in Physics from Sweden's Consul General in San Francisco.
• May 15 » USSSailfish is recommissioned. It was originally the USS Squalus.
• June 5 » World War II: After a brief lull in the Battle of France, the Germans renew the offensive against the remaining French divisions south of the River Somme in Operation Fall Rot ("Case Red").
• June 16 » World War II: Marshal Henri Philippe Pétain becomes Chief of State of Vichy France (Chef de l'État Français).
• September 9 » George Stibitz pioneers the first remote operation of a computer.
• October 21 » The first edition of the Ernest Hemingway novel For Whom the Bell Tolls is published.

The temperature on September 25, 1940 was between 4.3 °C and 15.9 °C and averaged 9.7 °C. There was 5.1 hours of sunshine (42%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest.