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.
April 10 » On Easter Sunday, Pope Leo XIII authorizes the establishment of the Catholic University of America.
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.
October 1 » Balochistan is conquered by the British Empire.
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
February 13 » An allegedly 500,000-year-old rock is discovered near Olancha, California, US, that appears to anachronistically encase a spark plug.
May 1 » The Prime Minister of Cuba, Fidel Castro, proclaims Cuba a socialist nation and abolishes elections.
May 4 » Malcolm Ross and Victor Prather attain a new altitude record for manned balloon flight ascending in the Strato-Lab V open gondola to 113,740 feet (34.67km).
May 24 » American civil rights movement: Freedom Riders are arrested in Jackson, Mississippi, for "disturbing the peace" after disembarking from their bus.
September 17 » The world's first retractable roof stadium, the Civic Arena, opens in Pittsburgh, Pennsylvania.
September 20 » Greek general Konstantinos Dovas becomes Prime Minister of Greece.
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 4, 2026), "Katharine Lowell ROOSEVELT ...Reeve (1887-1961)".
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