About the day » Monday September 23, 1940Calender converter

• Henrika Bernardina Gerarda (Riki) Baakman, Nieuwdijk Didam Montferland Gelderland Nederland († 2015)
• Bobby Joe Todd ?****, Honeygrove, Fanning, Texas, Verenigde Staten († 2017)
• Fernando Bastos Brito, Mogi Mirim, São Paulo, Brasil († 2015)
• jacobus johannes vossen, meijel
• Henri Andre COUZY, 's-Gravenhage, Zuid-Holland, Nederland († 2019)
• Christien Joseph LEPERLIER, L'Étang-Salé,97427,Réunion,Réunion,FRANCE († 1994)
• Hendrica Josephina Seijkens, Asten († 2009)
• Anna Maria Eduard De Busscher, Moerkerke (B), België († 1983)
• Eddy Dreese, Zandvoort, Noord-Holland, Nederland († 1944)
• François Cuypers († 1940)

• Aren van den Nieuwendijk (84), Rotterdam, Zuid-Holland, Nederland
• Alexander Nas (64), Nijmegen
• Arie de Jong (58), Scheveningen
• Afra Zoon (34), Alkmaar, Noord-Holland, Nederland
• Arina Janna Rietveld (56), Sliedrecht
• Aalderd van VLAANDEREN (72), Echteld
• Alexander Franciscus Janssens (45), Herentals
• Andreas Gergorius Marie Santen (39), Alkmaar
• Agada Catharina van Dijk (0), Leiden, Zuid-Holland, Nederland
• Adriana Wilhelmina Been (70), rotterdam (zuid holland)

• 1938 » Romy Schneider, Austrian-French actress († 1982)
• 1939 » Henry Blofeld, English cricketer and journalist
• 1939 » Joan Hanham, Baroness Hanham, English politician
• 1939 » Roy Buchanan, American singer-songwriter and guitarist († 1988)
• 1939 » Sonny Vaccaro, American businessman
• 1940 » Dick Thornett, Australian rugby player and water polo player († 2011)
• 1940 » Michel Temer, Brazilian lawyer and politician, 25th Vice President of Brazil
• 1941 » George Jackson, American activist and author, co-founded the Black Guerrilla Family († 1971)
• 1941 » Norma Winstone, English singer-songwriter
• 1941 » Simon Nolet, Canadian ice hockey player and coach

• 1913 » Donato Álvarez, Argentinian general (b. 1825)
• 1917 » Werner Voss, German lieutenant and pilot (b. 1897)
• 1929 » Richard Adolf Zsigmondy, Austrian-German chemist, physicist, and academic, Nobel Prize laureate (b. 1865)
• 1939 » Francisco León de la Barra, Mexican politician and diplomat, interim president, 1911 (b. 1863)
• 1939 » Sigmund Freud, Austrian neurologist and psychiatrist (b. 1856)
• 1940 » Hale Holden, American businessman (b. 1869)
• 1943 » Elinor Glyn, English author, screenwriter, and producer (b. 1864)
• 1944 » Jakob Schaffner, Swiss author and critic (b. 1875)
• 1950 » Sam Barry, American basketball player and coach (b. 1892)
• 1958 » Jacob Nicol, Canadian publisher, lawyer, and politician (b. 1876)

• 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.
• May 28 » World War II: Belgium surrenders to Nazi Germany to end the Battle of Belgium.
• May 28 » World War II: Norwegian, French, Polish and British forces recapture Narvik in Norway. This is the first allied infantry victory of the War.
• June 3 » Franz Rademacher proposes plans to make Madagascar the "Jewish homeland", an idea that had first been considered by 19th century journalist Theodor Herzl.
• September 7 » Romania returns Southern Dobruja to Bulgaria under the Treaty of Craiova.
• September 12 » An explosion at the Hercules Powder Company plant in Kenvil, New Jersey kills 51 people and injures over 200.
• October 21 » The first edition of the Ernest Hemingway novel For Whom the Bell Tolls is published.

The temperature on September 23, 1940 was between 7.5 °C and 17.9 °C and averaged 13.9 °C. There was 4.2 hours of sunshine (34%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest.