About the day » Wednesday July 20, 1887Calender converter

• Aaltje Zwaan, Oudshoorn
• Alina Gunster, Peize, Drenthe, Nederland († 1971)
• Alfred Wolters, Mönchengladbach,,North Rhine-Westphalia,Germany
• Albert Scholte, Buitenpost (Achtkarspelen) († 1962)
• Andries Kloos, Schiedam († 1922)
• Adriana Kampen, Gestel en Blaarthem († 1981)
• Aleida Petronella Hoeven, Zutphen († 1964)
• Albert Hendrik Wallema, Siddeburen (Slochteren) († 1971)
• Aleida Mathilda Gruwel, Delft,, Zuid-Holland, Nederland
• Alberdina Bolsenbroek, Doesburg, Gelderland, Nederland († 1955)

• Aaltje Reinders Eikelboom (58), Zwartsluis
• Aaltje Reinders Eikelboom (58), Zwartsluis, Nederland
• Anthonij Werner (47), De Bilt
• Arij Maartensz Noordzij (81), Kampen, ov.nld
• Adrianus de Visser (2), Rotterdam, Zuid-Holland, Nederland
• Aart Mostert (1), Elspeet
• Arnoldus Ludovicus Brokken (1), Tilburg
• Andriza Christina Wihelmina Boon (53), Charlois
• Adrianus Volkering (16), Wateringen, Westland, Zuid-Holland, Nederland
• Anthonij Werner (47), de Bilt, Utrecht, Nederland

• 1876 » Otto Blumenthal, German mathematician and academic († 1944)
• 1877 » Tom Crean, Irish sailor and explorer († 1938)
• 1882 » Olga Hahn-Neurath, Austrian mathematician and philosopher († 1937)
• 1889 » John Reith, 1st Baron Reith, Scottish broadcaster, co-founded BBC († 1971)
• 1890 » Giorgio Morandi, Italian painter († 1964)
• 1890 » Julie Vinter Hansen, Danish-Swiss astronomer and academic († 1960)
• 1890 » Verna Felton, American actress († 1966)
• 1893 » George Llewelyn Davies, English soldier († 1915)
• 1895 » László Moholy-Nagy, Hungarian painter, photographer, and sculptor († 1946)
• 1897 » Tadeusz Reichstein, Polish-Swiss chemist and academic, Nobel Prize laureate († 1996)

• 1866 » Bernhard Riemann, German mathematician and academic (b. 1826)
• 1897 » Jean Ingelow, English poet and author (b. 1820)
• 1901 » William Cosmo Monkhouse, English poet and critic (b. 1840)
• 1903 » Leo XIII, pope of the Catholic Church (b. 1810)
• 1908 » Demetrius Vikelas, Greek businessman and author (b. 1835)
• 1908 » Karl Bernhard Zoeppritz, German geophysicist and seismologist (b. 1881)
• 1910 » Anderson Dawson, Australian politician, 14th Premier of Queensland (b. 1863)
• 1922 » Andrey Markov, Russian mathematician and theorist (b. 1856)
• 1923 » Pancho Villa, Mexican general and politician, Governor of Chihuahua (b. 1878)
• 1926 » Felix Dzerzhinsky, Russian educator and politician (b. 1877)

1. Johannes
2. Jan
3. Cornelis
4. Hendrik
5. Willem
6. Pieter
7. Gerrit
8. Jacob
9. Petrus
10. Jacobus
11. Adrianus
12. Arie
13. Dirk
14. Hendrikus
15. Gerardus
16. Albert

1. Maria
2. Johanna
3. Anna
4. Cornelia
5. Adriana
6. Elisabeth
7. Wilhelmina
8. Catharina
9. Hendrika
10. Aaltje
11. Grietje
12. Neeltje
13. Jacoba
14. Geertruida
15. Antje
16. Petronella

• 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.
• February 8 » The Dawes Act authorizes the President of the United States to survey Native American tribal land and divide it into individual allotments.
• February 23 » The French Riviera is hit by a large earthquake, killing around 2,000.
• June 18 » The Reinsurance Treaty between Germany and Russia is signed.
• July 26 » Publication of the Unua Libro, founding the Esperanto movement.
• November 11 » August Spies, Albert Parsons, Adolph Fischer and George Engel are executed as a result of the Haymarket affair.

The temperature on July 20, 1887 was about 19.5 °C. The air pressure was 19 kgf/m² and came mainly from the north-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 53%.