The temperature on April 18, 1887 was about 13.2 °C. The air pressure was 14 kgf/m2 and came mainly from the west. The airpressure was 77 cm mercury. The atmospheric humidity was 47%. Source: KNMI
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.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
July 6 » David Kalākaua, monarch of the Kingdom of Hawaii, is forced to sign the Bayonet Constitution, which transfers much of the king's authority to the Legislature of the Kingdom of Hawaii.
July 26 » Publication of the Unua Libro, founding the Esperanto movement.
October 1 » Balochistan is conquered by the British Empire.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
November 13 » Bloody Sunday clashes in central London.
Day of death August 18, 1961
The temperature on August 18, 1961 was between 11.2 °C and 17.8 °C and averaged 15.2 °C. There was 1.2 mm of rain during 0.3 hours. There was 0.1 hours of sunshine (1%). The almost completely overcast was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
January 27 » The Soviet submarine S-80 sinks when its snorkel malfunctions, flooding the boat.
March 9 » Sputnik 9 successfully launches, carrying a dog and a human dummy, and demonstrating that the Soviet Union was ready to begin human spaceflight.
March 30 » The Single Convention on Narcotic Drugs is signed in New York City.
May 24 » American civil rights movement: Freedom Riders are arrested in Jackson, Mississippi, for "disturbing the peace" after disembarking from their bus.
September 12 » The African and Malagasy Union is founded.
October 30 » Due to "violations of Vladimir Lenin's precepts", it is decreed that Joseph Stalin's body be removed from its place of honour inside Lenin's tomb and buried near the Kremlin Wall with a plain granite marker.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P6865.php : accessed January 5, 2026), "Katharine Lowell ROOSEVELT ...Reeve (1887-1961)".
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