About the day » Sunday August 21, 1887Calender converter

• Anna Maria - Maria Book, Barger-Compascuum († 1932)
• Anna Eva Lückhardt, Kerspenhausen, Hessen, Duitsland († 1986)
• ? ? († 1969)
• Aaltje Swaneveld, Geervliet, Zuid Holland, Nederland
• Adam Fred Patzer, Parkston, Hutchinson, South Dakota, VS († 1941)
• Anna Geertruida Wijlacker, Uitgeest
• Anna Maria van Vegten, Nieuwer-Amstel, Amstelveen, Noord-Holland, Nederland
• , Bolsward
• Aaltje Van Meijgaarden, Leiden,, Zuid-Holland, Nederland († 1889)
• Alida Kooiman, Jutphaas, Utrecht, Nederland († 1930)

• Adriana Maulus, Udenhout
• Anthonij (Anthony) Hagen (54), Maastricht, Limburg, Nederland
• Andre BENOIT (70), Pittsfield, Massachusetts, Verenigde Staten
• de Groot (0), Schoonoord, gem. Sleen
• Anna Maria van den Brink (0), Bunnik zie Utrecht-Bunnik
• Antonius Franciscus Maria Broekhuijsen (0), Arnhem, Gelderland, Nederland
• Auke van der Helm (3), Weststellingwerf, Friesland, Nederland
• Aaltje van Rein (10), Gasteren, Anloo, Drenthe, Nederland
• Anna Catharina Horemans (61), Herenthout, 2270, Antwerpen, Belgium
• Anna Margaretha Ipskamp (0), Doesburg

• 1878 » Richard Girulatis, German footballer and manager († 1963)
• 1879 » Claude Grahame-White, English pilot and engineer († 1959)
• 1884 » Chandler Egan, American golfer and architect († 1936)
• 1885 » Édouard Fabre, Canadian runner († 1939)
• 1886 » Ruth Manning-Sanders, Welsh-English author and poet († 1988)
• 1887 » James Paul Moody, English sailor († 1912)
• 1891 » Emiliano Mercado del Toro, Puerto Rican-American soldier († 2007)
• 1892 » Charles Vanel, French actor and director († 1989)
• 1894 » Christian Schad, German painter († 1982)
• 1895 » Blossom Rock, American actress († 1978)

• 1838 » Adelbert von Chamisso, German botanist and poet (b. 1781)
• 1853 » Charles Tristan, marquis de Montholon, French general (b. 1783)
• 1854 » Thomas Clayton, American lawyer and politician (b. 1777)
• 1867 » Juan Álvarez, Mexican general and president (1855) (b. 1790)
• 1870 » Ma Xinyi, Chinese general and politician, Viceroy of Liangjiang (b. 1821)
• 1888 » James Farnell, Australian politician, 8th Premier of New South Wales (b. 1825)
• 1905 » Alexander von Oettingen, Estonian theologian and statistician (b. 1827)
• 1910 » Bertalan Székely, Hungarian painter and academic (b. 1835)
• 1919 » Laurence Doherty, English tennis player (b. 1875)
• 1935 » John Hartley, English tennis player (b. 1849)

• 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 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
• The Netherlands had about 4.5 million citizens.
• January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
• April 28 » A week after being arrested by the Prussian Secret Police, French police inspector Guillaume Schnaebelé is released on order of William I, German Emperor, defusing a possible war.
• June 8 » Herman Hollerith applies for US patent #395,781 for the 'Art of Compiling Statistics', which was his punched card calculator.
• June 18 » The Reinsurance Treaty between Germany and Russia is signed.
• June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
• November 9 » The United States receives rights to Pearl Harbor, Hawaii.

The temperature on August 21, 1887 was about 14.5 °C. The air pressure was 28 kgf/m² and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 78%.