The temperature on April 7, 1881 was about 9.1 °C. The air pressure was 11 kgf/m2 and came mainly from the north-northeast. The airpressure was 76 cm mercury. The atmospheric humidity was 52%. Source: KNMI
In The Netherlands , there was from August 20, 1879 to April 23, 1883 the cabinet Van Lijnden van Sandenburg, with Mr. C.Th. baron Van Lijnden van Sandenburg (conservatief-AR) as prime minister.
March 13 » Alexander II of Russia is assassinated.
April 14 » The Four Dead in Five Seconds Gunfight is fought in El Paso, Texas.
June 28 » The Austro–Serbian Alliance of 1881 is secretly signed.
July 1 » General Order 70, the culmination of the Cardwell and Childers reforms of the British Army, comes into effect.
July 23 » The Boundary Treaty of 1881 between Chile and Argentina is signed in Buenos Aires.
November 7 » Mapuche rebels attack the Chilean settlement of Nueva Imperial, as defenders fled to the hills and the settlement was effectively destroyed.
Day of death July 21, 1963
The temperature on July 21, 1963 was between 9.2 °C and 24.5 °C and averaged 17.3 °C. There was 14.9 hours of sunshine (93%). The almost cloudless was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
March 21 » Alcatraz Federal Penitentiary (in California) closes.
April 12 » The Soviet nuclear-powered submarine K-33 collides with the Finnish merchant vessel M/S Finnclipper in the Danish straits.
June 5 » Movement of 15 Khordad: Protests against the arrest of Ayatollah Ruhollah Khomeini by the Shah of Iran, Mohammad Reza Pahlavi. In several cities, masses of angry demonstrators are confronted by tanks and paratroopers.
October 4 » Hurricane Flora kills 6,000 in Cuba and Haiti.
November 1 » The Arecibo Observatory in Arecibo, Puerto Rico, with the largest radio telescope ever constructed, officially opens.
December 8 » Pan Am Flight 214, a Boeing 707, is struck by lightning and crashes near Elkton, Maryland, killing all 81 people on board.
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/P6796.php : accessed January 3, 2026), "Richard Derby (1881-1963)".
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