The temperature on October 3, 1881 was about 12.6 °C. The air pressure was 3 kgf/m2 and came mainly from the east-northeast. The airpressure was 77 cm mercury. The atmospheric humidity was 62%. 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.
February 24 » China and Russia sign the Sino-Russian Ili Treaty.
March 1 » The first Minnesota State Capitol burns down.
June 13 » The USS Jeannette is crushed in an Arctic Ocean ice pack.
July 14 » Billy the Kid is shot and killed by Pat Garrett outside Fort Sumner.
July 23 » The Boundary Treaty of 1881 between Chile and Argentina is signed in Buenos Aires.
November 9 » Mapuche rebels attack the fortified Chilean settlement of Temuco.
Day of death April 22, 1960
The temperature on April 22, 1960 was between 2.2 °C and 13.9 °C and averaged 8.7 °C. There was 0.1 mm of rain. There was 0.8 hours of sunshine (6%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northwest. Source: KNMI
April 15 » At Shaw University in Raleigh, North Carolina, Ella Baker leads a conference that results in the creation of the Student Nonviolent Coordinating Committee, one of the principal organizations of the civil rights movement in the 1960s.
April 27 » Togo gains independence from French-administered UN trusteeship.
May 1 » Formation of the western Indian states of Gujarat and Maharashtra; also known as "Maharashtra Day".
May 22 » The Great Chilean earthquake, measuring 9.5 on the moment magnitude scale, hits southern Chile, becoming the most powerful earthquake ever recorded.
June 20 » The Mali Federation gains independence from France (it later splits into Mali and Senegal).
December 17 » Troops loyal to Emperor Haile Selassie in Ethiopia crush the coup that began December 13, returning power to their leader upon his return from Brazil. Haile Selassie absolves his son of any guilt.
When copying data from this family tree, please include a reference to the origin: Peeters Mathieu, "FutureHistory", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-riske/I28545.php : accessed February 8, 2026), "Leon Koppen (1881-1960)".
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