About the day » Tuesday April 21, 1868Calender converter

• Andries Rooijackers, Gemert,Noord-Brabant,Nederland († 1943)
• Albertje Jans Bessembinders, Onstwedde (gem. Stadskanaal) († 1902)
• Anna Maria Theresia Vanbrabant, Nieuwerkerken, België
• Anna Cecilia van der Veen, Zwolle
• Alberdina Matser, Worth Rheden († 1950)
• Albert Bakker, Den Ham († 1933)
• Adriana Pieternella den Heijer, 's-Gravenhage, Zuid-Holland, Nederland († 1960)
• Anna Maria Welten, Schijndel, Noord-Brabant, Nederland († 1927)
• Adrianus van Kampen, Amsterdam, Noord-Holland, Nederland
• Adriana den Heijer, Scheveningen, Zuid-Holland, Nederland

• Anne Marie HUSSER (82), Elbach (68210, Haut-Rhin, France)
• Alfien of Aafje (Hendriks) Bremer (70), Kloosterveen, Smilde, Drenthe, Nederland
• Adriana BUIJS Cdr (0), Oude-Tonge, Goeree-Overflakkee, NL-ZH
• Adriana Buijs (0), Nieuwe-Tonge, ZH, Nederland
• Alberdina Veldman, Ulrum, Groningen, Nederland
• Alberdina Veldman (74), Ulrum (73jr)
• Adolf Versfelt (0), Rotterdam, Zuid-Holland, Nederland
• Aafje(Aafien) Bremer (70), smilde
• Antonia Vissers (55), Raamsdonkveer
• Aafien Hendriks Bremer (70), Kloosterveen (Smilde), Drenthe, Nederland

• 1851 » Charles Barrois, French geologist and palaeontologist († 1939)
• 1854 » William Stang, German-American bishop († 1907)
• 1864 » Max Weber, German economist and sociologist († 1920)
• 1868 » Alfred Henry Maurer, American painter († 1932)
• 1870 » Edwin Stanton Porter, American director, producer, and screenwriter († 1941)
• 1874 » Vincent Scotto, French actor and composer († 1952)
• 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 » Marcel Boussac, French businessman († 1980)

• 1815 » Joseph Winston, American soldier and politician (b. 1746)
• 1825 » Johann Friedrich Pfaff, German mathematician and academic (b. 1765)
• 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)

• Koning Willem III (Huis van Oranje-Nassau) was from 1849 till 1890 sovereign of the Netherlands (also known as Koninkrijk der Nederlanden)
• From June 1, 1866 till June 4, 1868 the Netherlands had a cabinet Van Zuijlen van Nijevelt - Heemskerk with the prime ministers Mr. J.P.J.A. graaf Van Zuijlen van Nijevelt (AR) and Mr. J. Heemskerk Azn. (conservatief).
• From June 4, 1868 till January 4, 1871 the Netherlands had a cabinet Van Bosse - Fock with the prime ministers Mr. P.P. van Bosse (liberaal) and Mr. C. Fock (liberaal).
• The Netherlands had about 3.6 million citizens.
• February 2 » Pro-Imperial forces captured Osaka Castle from the Tokugawa shogunate and burned it to the ground.
• March 5 » Mefistofele, an opera by Arrigo Boito, receives its premiere performance at La Scala.
• May 16 » The United States Senate fails to convict President Andrew Johnson by one vote.
• May 26 » The Impeachment of Andrew Johnson ends with his acquittal by one vote.
• June 23 » Christopher Latham Sholes received a patent for an invention he called the "Type-Writer".
• December 24 » The Greek Presidential Guard is established as the royal escort by King George I.

The temperature on April 21, 1868 was about 15.1 °C. There was 3 mm of rain. The air pressure was 34 kgf/m² and came mainly from the west-southwest. The airpressure was 75 cm mercury. The atmospheric humidity was 67%.