About the day » Saturday April 30, 1921Calender converter

• Bertha Uitslag († 1986)
• Bartholomeus PETERS, Heerlen († 1977)
• Arendina Gezina Koster, Borgercompagnie (gem.Veendam) († 1943)
• Audrey Spies († 1990)
• Antonius van den Heuvel, Gemert († 1921)
• Baeten, Meerlo,, Limburg, Nederland († 1921)
• Adriana Maria Jeanne (Tonnie) Ackermans, 's-Hertogenbosch († 1999)
• Bruigom, Haarlem
• Bouktje Scheringa († 1992)
• Ardelle Maxine Pirlet, Lake Preston (Kingsbury County) (South Dakota) († 2010)

• Abraham Lavino (67), Rotterdam
• Andries Doldersum (0), Hoogeveen
• Adriana van Rikxoord (5), Rotterdam, Zuid Holland, The Netherlands
• Anna Denlinger Kohr (86), Bart Township, Lancaster County, Pennsylvania, Verenigde Staten
• Bartha Kers (90), Epe, Gelderland, Nederland
• Annigje Kapteyn (37), Amsterdam,Gemeente Amsterdam,North Holland,Netherlands
• Berendina Willemina Colenbrander (65), Zelhem
• ANTJE STORM (39), 'S-GRAVENHAGE
• Antje Storm (39), Den Haag
• Antje Pieters Hoekstra (46), Suameer, Tietjerksteradeel, Friesland, Nederland

• 1917 » Bea Wain, American singer († 2017)
• 1920 » Duncan Hamilton, Irish-English race car driver and pilot († 1994)
• 1920 » Tom Moore, British army officer and fundraiser
• 1921 » Roger L. Easton, American scientist, co-invented the GPS († 2014)
• 1922 » Anton Murray, South African cricketer († 1995)
• 1923 » Kagamisato Kiyoji, Japanese sumo wrestler, the 42nd Yokozuna († 2004)
• 1923 » Percy Heath, American bassist († 2005)
• 1924 » Uno Laht, Estonian KGB officer and author († 2008)
• 1925 » Corinne Calvet, French actress († 2001)
• 1925 » Johnny Horton, American singer-songwriter and guitarist († 1960)

• 1891 » Joseph Leidy, American paleontologist and author (b. 1823)
• 1900 » Casey Jones, American railroad engineer (b. 1863)
• 1903 » Emily Stowe, Canadian physician and activist (b. 1831)
• 1910 » Jean Moréas, Greek poet and critic (b. 1856)
• 1936 » A. E. Housman, English poet and scholar (b. 1859)
• 1939 » Frank Haller, American boxer (b. 1883)
• 1943 » Beatrice Webb, English sociologist and economist (b. 1858)
• 1943 » Otto Jespersen, Danish linguist and academic (b. 1860)
• 1953 » Jacob Linzbach, Estonian linguist and author (b. 1874)
• 1956 » Alben W. Barkley, American lawyer and politician, 35th Vice President of the United States (b. 1877)

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.
• January 20 » The British K-class submarine HMS K5 sinks in the English Channel; all 56 on board die.
• February 21 » Constituent Assembly of the Democratic Republic of Georgia adopts the country's first constitution.
• March 24 » The 1921 Women's Olympiad begins in Monte Carlo, first international women's sports event.
• May 8 » The creation of the Communist Party of Romania.
• June 20 » Workers of Buckingham and Carnatic Mills in the city of Chennai, India, begin a four-month strike.
• June 28 » Serbian King Alexander I proclaims the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution.

The temperature on April 30, 1921 was between 6.8 °C and 20.2 °C and averaged 13.7 °C. There was 12.0 hours of sunshine (81%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast.