About the day » Sunday April 21, 1918Calender converter

• Aimee May Hirel, Channel Islands († 1952)
• Antonius Nicolaas de Vroege, Woerden († 1984)
• Antonetta Kuijs, Vlijmen, Noord-Brabant, Nederland († 1918)
• Adrianus Gerardus Pellikaan, Leerdam († 1945)
• Adrianus Herbert, Nootdorp, Pijnacker-Nootdorp, Zuid Holland, Nederland († 1996)
• Anthonius Hendrikus Jägers, Tjimati († 1945)
• Adrianus Cornelius Martinus Bakx, Oosterhout († 1996)
• Adrianus Cornelius Martinus Bakx, Oosterhout († 1996)
• Anna R de Graaff, Waalwijk,Noord-Brabant,Nederland († 1918)
• Andries van Westenbrugge, Scheveningen († 1992)

• Adrianus de Vaan (46), Vlijmen, Nederland
• Gerrigje van Roest (44)
• Bastiana Elizabeth van Gogh (87), Amsterdam
• Bartold Frans Westerouen van Meeteren (60), Oegstgeest
• Adriana Sparreboom (80), Rotterdam, Zuid-Holland, Nederland
• Adriaantje * Broekhuizen (1)
• Catharina van der Weijden (50), Rotterdam
• Benjamin Godfrey TURNER (62), Lyman, Wayne County, Utah, United States of America
• Barthold Frans Westerouen van Meeteren (60), Oegstgeest,Gemeente Oegstgeest,South Holland,Netherlands
• Ariaantje Broekhuizen (1), Schagen

• 1914 » Angelo Savoldi, Italian-American wrestler and promoter, co-founded International World Class Championship Wrestling († 2013)
• 1915 » Anthony Quinn, Mexican-American actor († 2001)
• 1915 » Garrett Hardin, American ecologist, author, and academic († 2003)
• 1916 » Estella B. Diggs, American businesswoman and politician († 2013)
• 1918 » Eddy Christiani, Dutch singer-songwriter and guitarist († 2016)
• 1919 » Don Cornell, American singer († 2004)
• 1919 » Licio Gelli, Italian financer († 2015)
• 1919 » Roger Doucet, Canadian tenor († 1981)
• 1920 » Edmund Adamkiewicz, German footballer († 1991)
• 1922 » Alistair MacLean, Scottish novelist and screenwriter († 1987)

• 1900 » Vikramatji Khimojiraj, Indian ruler (b. 1819)
• 1910 » Mark Twain, American novelist, humorist, and critic (b. 1835)
• 1918 » Manfred von Richthofen, German captain and pilot (b. 1892)
• 1924 » Eleonora Duse, Italian actress (b. 1858)
• 1930 » Robert Bridges, English poet and author (b. 1844)
• 1932 » Friedrich Gustav Piffl, Bohemian cardinal (b. 1864)
• 1938 » Muhammad Iqbal, Indian-Pakistani philosopher and poet (b. 1877)
• 1941 » Fritz Manteuffel, German gymnast (b. 1875)
• 1945 » Walter Model, German field marshal (b. 1891)
• 1946 » John Maynard Keynes, English economist and philosopher (b. 1883)

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

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

• 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 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
• 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 6.6 million citizens.
• January 8 » U.S. President Woodrow Wilson announces his "Fourteen Points" for the aftermath of World War I.
• January 25 » The Ukrainian People's Republic declares independence from Soviet Russia.
• January 29 » Ukrainian–Soviet War: The Bolshevik Red Army, on its way to besiege Kiev, is met by a small group of military students at the Battle of Kruty.
• February 25 » German forces capture Tallinn to virtually complete the occupation of Estonia.
• March 31 » Daylight saving time goes into effect in the United States for the first time.
• June 24 » First airmail service in Canada from Montreal to Toronto.

The temperature on April 21, 1918 was between -1.8 °C and 11.5 °C and averaged 5.8 °C. There was 8.6 hours of sunshine (60%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast.