The temperature on May 20, 1915 was between 9.7 °C and 16.5 °C and averaged 13.0 °C. There was 1.5 hours of sunshine (9%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from August 29, 1913 to September 9, 1918 the cabinet Cort van der Linden, with Mr. P.W.A. Cort van der Linden (liberaal) as prime minister.
January 19 » German strategic bombing during World War I: German zeppelins bomb the towns of Great Yarmouth and King's Lynn in the United Kingdom killing at least 20 people, in the first major aerial bombardment of a civilian target.
January 21 » Kiwanis International is founded in Detroit.
May 7 » The Republic of China accedes to 13 of the 21 Demands, extending the Empire of Japan's control over Manchuria and the Chinese economy.
July 7 » The First Battle of the Isonzo comes to an end.
August 6 » World War I: Battle of Sari Bair: The Allies mount a diversionary attack timed to coincide with a major Allied landing of reinforcements at Suvla Bay.
September 12 » French soldiers rescue over 4,000 Armenian Genocide survivors stranded on Musa Dagh.
Day of marriage December 1, 1937
The temperature on December 1, 1937 was between 2.5 °C and 7.4 °C and averaged 5.4 °C. There was 3.0 mm of rain during 4.2 hours. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 19 » Howard Hughes sets a new air record by flying from Los Angeles to New York City in 7 hours, 28 minutes, 25 seconds.
January 23 » The trial of the anti-Soviet Trotskyist center sees seventeen mid-level Communists accused of sympathizing with Leon Trotsky and plotting to overthrow Joseph Stalin's regime.
February 19 » Yekatit 12: During a public ceremony at the Viceregal Palace (the former Imperial residence) in Addis Ababa, Ethiopia, two Ethiopian nationalists of Eritrean origin attempt to kill viceroy Rodolfo Graziani with a number of grenades.
May 21 » A Soviet station, North Pole-1, becomes the first scientific research settlement to operate on the drift ice of the Arctic Ocean.
July 5 » Spam, the luncheon meat, is introduced into the market by the Hormel Foods Corporation.
December 22 » The Lincoln Tunnel opens to traffic in New York City.
Day of death August 1, 1957
The temperature on August 1, 1957 was between 12.9 °C and 23.6 °C and averaged 18.6 °C. There was 12.8 hours of sunshine (82%). The almost cloudless was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
January 3 » The Hamilton Watch Company introduces the first electric watch.
January 11 » The African Convention is founded in Dakar, Senegal.
April 6 » Greek shipping tycoon Aristotle Onassis buys the Hellenic National Airlines (TAE) and founds Olympic Airlines.
October 4 » Sputnik 1 becomes the first artificial satellite to orbit the Earth.
November 17 » Vickers Viscount G-AOHP of British European Airways crashes at Ballerup after the failure of three engines on approach to Copenhagen Airport. The cause is a malfunction of the anti-icing system on the aircraft. There are no fatalities.
December 20 » The initial production version of the Boeing 707 makes its first flight.
Day of burial August 5, 1957
The temperature on August 5, 1957 was between 10.7 °C and 25.2 °C and averaged 18.6 °C. There was 10.9 hours of sunshine (71%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-northeast. Source: KNMI
January 3 » The Hamilton Watch Company introduces the first electric watch.
January 22 » The New York City "Mad Bomber", George P. Metesky, is arrested in Waterbury, Connecticut and charged with planting more than 30 bombs.
January 23 » American inventor Walter Frederick Morrison sells the rights to his flying disc to the Wham-O toy company, which later renames it the "Frisbee".
April 11 » United Kingdom agrees to Singaporean self-rule.
July 28 » Heavy rain and a mudslide in Isahaya, western Kyushu, Japan, kills 992.
September 2 » President Ngô Đình Diệm of South Vietnam becomes the first foreign head of state to make a state visit to Australia.
When copying data from this family tree, please include a reference to the origin: Van Knippenberg, "Family tree Van Knippenberg", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-knippenberg/I1144.php : accessed February 2, 2026), "Sophia Helena Knippenberg (1915-1957)".
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