The temperature on August 12, 1915 was between 9.8 °C and 22.0 °C and averaged 16.6 °C. There was 0.1 mm of rain. There was 6.6 hours of sunshine (44%). The average windspeed was 2 Bft (weak wind) and was prevailing from the southwest. 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 13 » The 6.7 Mw Avezzano earthquake shakes the Province of L'Aquila in Italy with a maximum Mercalli intensity of XI (Extreme), killing between 29,978–32,610.
February 22 » World War I: The Imperial German Navy institutes unrestricted submarine warfare.
April 24 » The arrest of 250 Armenian intellectuals and community leaders in Istanbul marks the beginning of the Armenian Genocide.
August 17 » Jewish American Leo Frank is lynched in Marietta, Georgia after a 13-year-old girl is murdered.
September 30 » World War I: Radoje Ljutovac becomes the first soldier in history to shoot down an enemy aircraft with ground-to-air fire.
October 13 » First World War: The Battle of the Hohenzollern Redoubt marks the end of the Battle of Loos.
Day of death April 17, 1987
The temperature on April 17, 1987 was between 8.1 °C and 16.8 °C and averaged 12.0 °C. There was 1.0 hours of sunshine (7%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-northeast. Source: KNMI
In The Netherlands , there was from Tuesday, November 4, 1986 to Tuesday, November 7, 1989 the cabinet Lubbers II, with Drs. R.F.M. Lubbers (CDA) as prime minister.
January 1 » The Isleta Pueblo tribe elect Verna Williamson to be their first female governor.
March 6 » The British ferry MSHerald of Free Enterprise capsizes in about 90 seconds, killing 193.
July 29 » Prime Minister of India Rajiv Gandhi and President of Sri Lanka J. R. Jayewardene sign the Indo-Sri Lanka Accord on ethnic issues.
August 7 » Cold War: Lynne Cox becomes the first person to swim from the United States to the Soviet Union, crossing the Bering Strait from Little Diomede Island in Alaska to Big Diomede in the Soviet Union.
November 8 » Remembrance Day bombing: A Provisional IRA bomb explodes in Enniskillen, Northern Ireland during a ceremony honouring those who had died in wars involving British forces. Twelve people are killed and sixty-three wounded.
December 8 » An Israeli army tank transporter kills four Palestinian refugees and injures seven others during a traffic accident at the Erez Crossing on the Israel–Gaza Strip border, which has been cited as one of the events which sparked the First Intifada.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I5470.php : accessed February 21, 2026), "Hendrik Hendrikus de Wolf (1915-1987)".
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