About the day » Wednesday May 11, 1921Calender converter

• Antonius Maria van Dijk, Baarn († 1985)
• Abigaël Binger, Amsterdam, Nederland († 1944)
• Adrianus Maria Joseph Pennings, Noordwijkerhout († 1976)
• Anna Maria Ruiter († 1994)
• Anna Elisa Maria Reck, Hasselt, België († 1976)
• * Johannes Adrianus (Jan) Barten, Schijndel († 1989)
• Aaltje de Jong, Lonneker († 2016)
• Adrianus Gerardus Sweere, Oudenmolen,, Noord-Brabant, Nederland († 1991)
• Broiels Plaizier, Eenrum († 1921)
• Anne Draaijer, Workum († 1987)

• Agatha Klop (66), Hellevoetsluis
• Aaltje Gerrits Koops (86), Kamperveen, Nederland
• Anthonie Treur (41), Den Haag
• Bernard William Obermeier (75), Louisville, Jefferson County, KY, United States
• Catharina Johanna Antoinetta van 't Lindenhout (81), Amsterdam, Noord-Holland, Nederland
• Albertha Lexmond (79), Benschop, Utrecht, Netherlands
• Catherine Kittie Ann Clark (68), Jessamine,Kentucky, Verenigde Staten
• Aaltje Koops (86), Kamperveen, Overijssel, Nederland
• Aaltje Koops (86), Kamperveen, Overijssel, Netherlands
• Aaltje Jans van der Schaaf (84)

• 1912 » Saadat Hasan Manto, Indian-Pakistani author and screenwriter († 1955)
• 1916 » Camilo José Cela, Spanish author and politician, Nobel Prize laureate († 2002)
• 1918 » Richard Feynman, American physicist and engineer, Nobel Prize laureate († 1988)
• 1921 » Hildegard Hamm-Brücher, German politician († 2016)
• 1921 » Robin Barbour, Scottish minister and author († 2014)
• 1924 » Antony Hewish, English astronomer and academic, Nobel Prize laureate
• 1925 » Edward J. King, American football player and politician, 66th Governor of Massachusetts († 2006)
• 1927 » Bernard Fox, British actor († 2016)
• 1927 » Gene Savoy, American explorer, author, and scholar († 2007)
• 1930 » Edsger W. Dijkstra, Dutch computer scientist and academic († 2002)

• 1889 » John Cadbury, English businessman and philanthropist, founded the Cadbury Company (b. 1801)
• 1908 » Charles Kingston, Australian politician, 20th Premier of South Australia (b. 1850)
• 1916 » Karl Schwarzschild, German astronomer and physicist (b. 1873)
• 1918 » George Elmslie, Australian politician, 25th Premier of Victoria (b. 1861)
• 1920 » James Colosimo, Italian-American mob boss (b. 1878)
• 1920 » William Dean Howells, American novelist, literary critic, and playwright (b. 1837)
• 1927 » Juan Gris, Spanish painter and sculptor (b. 1887)
• 1929 » Jozef Murgaš, Slovak-American priest, architect, botanist, and painter (b. 1864)
• 1938 » George Lyon, Canadian golfer and cricketer (b. 1858)
• 1955 » Gilbert Jessop, English cricketer (b. 1874)

1. Johannes
2. Jan
3. Cornelis
4. Hendrik
5. Willem
6. Pieter
7. Gerrit
8. Adrianus
9. Petrus
10. Jacob
11. Jacobus
12. Wilhelmus
13. Gerardus
14. Antonius
15. Hendrikus
16. Arie

1. Maria
2. Johanna
3. Anna
4. Cornelia
5. Wilhelmina
6. Elisabeth
7. Adriana
8. Hendrika
9. Catharina
10. Petronella
11. Jacoba
12. Grietje
13. Aaltje
14. Geertruida
15. Jantje
16. Helena

• 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 September 9, 1918 to September 18, 1922 the cabinet Ruys de Beerenbrouck I, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
• The Netherlands had about 6.9 million citizens.
• February 25 » Georgian capital Tbilisi falls to the invading Russian forces after heavy fighting and the Russians declare the Georgian Soviet Socialist Republic.
• March 1 » The Australian cricket team captained by Warwick Armstrong becomes the first team to complete a whitewash of The Ashes, something that would not be repeated for 86 years.
• March 18 » The second Peace of Riga is signed between Poland and the Soviet Union.
• June 12 » Mikhail Tukhachevsky orders the use of chemical weapons against the Tambov Rebellion, bringing an end to the peasant uprising.
• June 15 » Bessie Coleman earns her pilot's license, becoming the first female pilot of African-American descent.
• September 21 » A storage silo in Oppau, Germany, explodes, killing 500–600 people.

The temperature on May 11, 1921 was between 4.2 °C and 19.8 °C and averaged 13.0 °C. There was 0.1 mm of rain. There was 9.9 hours of sunshine (64%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east.