About the day » Sunday May 21, 1911Calender converter

• Alida Hendrika Schijffelen, Amsterdam, Noord-Holland, Nederland († 1971)
• Aaltje Heerdink
• Anna Cornelia Karremans, Zevenbergschen Hoek († 2000)
• Amalia Timmermans († 1962)
• Antonie Franciscus IJsselsteijn, Gouda, Zuid-Holland, Nederland († 1911)
• Adriana Maria Lavrijsen, Reusel († 1980)
• Aniceto Cruz Santos, Sobral, Ceara, Brasil († 1996)
• Adriana Heeren, Rucphen, Noord-Brabant, Nederland († 2005)
• Keppel, Leerdam, Zuid-Holland, Nederland († 1911)
• Anna Mienis, Akersloot, Castricum, Noord-Holland, Nederland

• Alfred van Preud'Homme d'Hailly Graaf van Nieuwpoort (76), Brugge, Vlaanderen
• Aalbert van de Belt (44), Uddel {GE} (gem Apeldoorn)
• Berend van Unen (68), Zwolle, Overijssel, Nederland
• Anna Geertruida Stakenburg (1), Amsterdam
• Alida de Vries (57), Beusichem (Buren) (GL)
• Keppel (0), Leerdam, Zuid-Holland, Nederland
• Alfred Antoine Charles Louis de PREUD'HOMME d'HAILLY de NIEUWPORT (76), Brugge, 31005, West-Vlaanderen, Belgique
• Andries Hubertus Caris (0), Nederweert
• Alida de Vries (57), Beusichem, Gelderland, Nederland
• Antonius Franciscus Schuurmans (0), Huissen

• 1907 » John C. Allen, American roller coaster designer († 1979)
• 1912 » Chen Dayu, Chinese painter and calligrapher († 2001)
• 1912 » John Curtis Gowan, American psychologist and academic († 1986)
• 1912 » Monty Stratton, American baseball player and coach († 1982)
• 1913 » Gina Bachauer, Greek pianist and composer († 1976)
• 1915 » Cathleen Cordell, American actress († 1997)
• 1915 » Chakravarthi V. Narasimhan, Indian Civil Service Officer and former Under Secretary-General of the UN († 2003)
• 1916 » Dennis Day, American singer and actor († 1988)
• 1916 » Harold Robbins, American author and screenwriter († 1997)
• 1916 » Tinus Osendarp, Dutch sprinter and police officer († 2002)

• 1894 » Émile Henry, French anarchist (b. 1872)
• 1894 » August Kundt, German physicist and academic (b. 1839)
• 1895 » Franz von Suppé, Austrian composer and conductor (b. 1819)
• 1901 » Joseph Olivier, French rugby player (b. 1874)
• 1911 » Williamina Fleming, Scottish-American astronomer and academic (b. 1857)
• 1915 » Leonid Gobyato, Russian general and engineer (b. 1875)
• 1919 » Evgraf Fedorov, Russian mathematician, crystallographer, and mineralogist (b. 1853)
• 1920 » Venustiano Carranza, Mexican politician, 54th President of Mexico (b. 1859)
• 1925 » Hidesaburō Ueno, Japanese agriculturalist, guardian of Hachikō (b. 1871)
• 1926 » Ronald Firbank, English-Italian author (b. 1886)

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

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

• 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 February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
• The Netherlands had about 6.0 million citizens.
• January 15 » Palestinian Arabic-language Falastin newspaper founded.
• April 2 » The Australian Bureau of Statistics conducts the country's first national census.
• April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
• May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
• August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
• September 7 » French poet Guillaume Apollinaire is arrested and put in jail on suspicion of stealing the Mona Lisa from the Louvre museum.

The temperature on May 21, 1911 was between 6.5 °C and 17.7 °C and averaged 11.8 °C. There was 11.1 hours of sunshine (70%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north.