About the day » Sunday April 21, 1889Calender converter

• Aaltje Beer, Oude Pekela, Groningen, Netherlands († 1979)
• Alfred Ernest Albert BLYTH, Prossers Forrest, Tasmania, Australia († 1984)
• Albert Clementin Vrijenhoek, Schiedam († 1890)
• Aleida Van Coevorden, Groningen, The Netherlands († 1962)
• "Viktoria Feodora" Agnes Leopoldine Elisabeth Reuss, Potsdam, Allemagne († 1918)
• Agnes Josefine Henriette Johnsen Adamsdatter, Kyskmo i Beiarn († 1965)
• Alijda Margaretha Korten, Utrecht († 1958)
• Adriaan Hansum, Dordrecht († 1910)
• Aaltje Hooijer, Zuidwolde, Drenthe, Nederland († 1968)
• Aaltje Olthof, Veendam († 1942)

• Aaltje Cornelia van Bommel (44), Magelang, Java, Indonesië
• Adriana Wilhelmina van der Ree (0), Gouda, Zuid-Holland, Nederland
• Aart Lubberse (80), Putten
• "Georges" Louis de Bertoult (54), Saint-Omer, Pas-de-Calais, France
• Anna Alida Martina ter HEIJDEN (5), Delft, Zuid-Holland, Nederland
• Abraham Peterman (78), Pa
• Aleida Kupper OR Kuiper (68), Azewijn
• Antje Smit (76), Enkhuizen, Noord-Holland, Nederland
• Aart Lubbersen (79), Putten
• Ann WILSON (71), Great Chishall,Cambridgeshire,England,Verenigd Koninkrijk

• 1882 » Percy Williams Bridgman, American physicist and academic, Nobel Prize laureate († 1961)
• 1885 » Tatu Kolehmainen, Finnish runner († 1967)
• 1887 » Joe McCarthy, American baseball manager († 1978)
• 1889 » Efrem Zimbalist, Sr., Russian-American violinist, composer, and conductor († 1985)
• 1889 » Marcel Boussac, French businessman († 1980)
• 1889 » Paul Karrer, Russian-Swiss chemist and academic, Nobel Prize laureate († 1971)
• 1892 » Freddie Dixon, English motorcycle racer and racing driver († 1956)
• 1893 » Romeo Bertini, Italian runner († 1973)
• 1898 » Maurice Wilson, English soldier, pilot, and mountaineer († 1934)
• 1899 » Randall Thompson, American composer and academic († 1984)

• 1852 » Ivan Nabokov, Russian general (b. 1787)
• 1863 » Sir Robert Bateson, 1st Baronet, Irish politician (b. 1782)
• 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)

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• In The Netherlands , there was from April 21, 1888 to August 21, 1891 the cabinet Mackay, with Mr. A. baron Mackay (AR) as prime minister.
• The Netherlands had about 4.5 million citizens.
• January 30 » Archduke Crown Prince Rudolf of Austria, heir to the Austro-Hungarian crown, is found dead with his mistress Baroness Mary Vetsera in the Mayerling.
• February 9 » US president Grover Cleveland signs a bill elevating the United States Department of Agriculture to a Cabinet-level agency.
• April 1 » The University of Northern Colorado was established, as the Colorado State Normal School.
• June 6 » The Great Seattle Fire destroys all of downtown Seattle.
• June 26 » Bangui is founded by Albert Dolisie and Alfred Uzac in what was then the upper reaches of the French Congo.
• June 29 » Hyde Park and several other Illinois townships vote to be annexed by Chicago, forming the largest United States city in area and second largest in population at the time.

The temperature on April 21, 1889 was about 14.8 °C. The air pressure was 12 kgf/m² and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 57%.