About the day » Wednesday April 1, 1903Calender converter

• Albert Franciscus Tonissen, Rotterdam, Zuid-Holland, Nederland († 1903)
• Albert D Todd, Louisiana († 1977)
• Aaltje van de Bovenkamp, Veenendaal-Utrecht-Nederland
• Alida Klerk, Rotterdam
• Anna Charlotte Hermanus, Madjalengka, Indonesië († 1991)
• Adriaan de Witte, Driewegen
• Adriana Hanegraaf, Nuland, Noord-Brabant, Netherlands († 1996)
• Adrianus Johannes van Hoogstraten, Berghem, 5351 († 1969)
• Abigail Josephine Elizabeth Wieberdink, Prinsburg, Kandiyohi County, Minnesota († 1990)
• Heystek, Zuid-Afrika, R.S.A. († 1903)

• Adrianus den Houdijker (62), Montfoort
• Aaltje (Ottens) Otten (28), Westerbork, Drenthe, Nederland
• Albert Zandbergen (0), de Leeuwte (Vollenhove, Ambt)
• Aaltje Otten (28), Westerbork
• Arend Jan Arentsen (1), Voorst
• Annigje Hoogeveen (0), Smilde
• Aaltje Thiessens (65), Groningen
• Anna Walburgis Krebs (84), Arnhem (GL)
• Heystek (0), Zuid-Afrika, R.S.A.
• Andries Brus (52), Rotterdam, Zuid-Holland, Nederland

• 1898 » William James Sidis, Ukrainian-Russian Jewish American mathematician, anthropologist, and historian († 1944)
• 1899 » Gustavs Celmiņš, Latvian academic and politician († 1968)
• 1900 » Stefanie Clausen, Danish Olympic diver († 1981)
• 1901 » Whittaker Chambers, American journalist and spy († 1961)
• 1905 » Gaston Eyskens, Belgian economist and politician, 47th Prime Minister of Belgium († 1988)
• 1905 » Paul Hasluck, Australian historian, poet, and politician, 17th Governor-General of Australia († 1993)
• 1906 » Alexander Sergeyevich Yakovlev, Russian engineer, founded the Yakovlev Design Bureau († 1989)
• 1907 » Shivakumara Swami, Indian religious leader and philanthropist († 2019)
• 1908 » Abraham Maslow, American psychologist and academic († 1970)
• 1908 » Harlow Rothert, American shot putter, lawyer, and academic († 1997)

• 1890 » Alexander Mozhaysky, Russian soldier, pilot, and engineer (b. 1825)
• 1890 » David Wilber, American politician (b. 1820)
• 1914 » Charles Wells, English founder of Charles Wells Ltd (b. 1842)
• 1914 » Rube Waddell, American baseball player (b. 1876)
• 1917 » Scott Joplin, American pianist and composer (b. 1868)
• 1920 » Walter Simon, German banker and philanthropist (b. 1857)
• 1922 » Charles I, emperor of Austria (b. 1887)
• 1922 » Hermann Rorschach, Swiss psychologist and author (b. 1884)
• 1924 » Jacob Bolotin, American physician (b. 1888)
• 1924 » Lloyd Hildebrand, English cyclist (b. 1870)

• 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 1, 1901 to August 16, 1905 the cabinet Kuijper, with Dr. A. Kuijper (AR) as prime minister.
• The Netherlands had about 5.3 million citizens.
• March 2 » In New York City the Martha Washington Hotel opens, becoming the first hotel exclusively for women.
• April 19 » The Kishinev pogrom in Kishinev (Bessarabia) begins, forcing tens of thousands of Jews to later seek refuge in Palestine and the Western world.
• July 19 » Maurice Garin wins the first Tour de France.
• September 11 » The first race at the Milwaukee Mile in West Allis, Wisconsin is held. It is the oldest major speedway in the world.
• October 1 » Baseball: The Boston Americans play the Pittsburgh Pirates in the first game of the modern World Series.
• October 10 » The Women's Social and Political Union is founded in support of the enfranchisement of British women.

The temperature on April 1, 1903 was between 3.5 °C and 10.6 °C and averaged 6.4 °C. There was 5.5 hours of sunshine (43%).