The temperature on June 19, 1915 was between 3.1 °C and 17.1 °C and averaged 10.6 °C. There was 2.6 hours of sunshine (16%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. 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 22 » Over 600 people are killed in Guadalajara, Mexico, when a train plunges off the tracks into a deep canyon.
January 24 » World War I: British Grand Fleet battle cruisers under Vice-Admiral Sir David Beatty engage Rear-Admiral Franz von Hipper's battle cruisers in the Battle of Dogger Bank.
February 12 » In Washington, D.C., the first stone of the Lincoln Memorial is put into place.
April 5 » Boxing challenger Jess Willard knocks out Jack Johnson in Havana, Cuba to become the Heavyweight Champion of the World.
August 29 » US Navy salvage divers raise F-4, the first U.S. submarine sunk in an accident.
September 5 » The pacifist Zimmerwald Conference begins.
Day of marriage July 10, 1946
The temperature on July 10, 1946 was between 9.0 °C and 22.3 °C and averaged 16.3 °C. There was 12.1 hours of sunshine (73%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
From June 24, 1945 till July 3, 1946 the Netherlands had a cabinet Schermerhorn - Drees with the prime ministers Prof. ir. W. Schermerhorn (VDB) and W. Drees (PvdA).
In The Netherlands , there was from July 3, 1946 to August 7, 1948 the cabinet Beel I, with Dr. L.J.M. Beel (KVP) as prime minister.
January 22 » In Iran, Qazi Muhammad declares the independent people's Republic of Mahabad at Chahar Cheragh Square in the Kurdish city of Mahabad; he becomes the new president and Haji Baba Sheikh becomes the prime minister.
February 1 » Trygve Lie of Norway is picked to be the first United Nations Secretary-General.
February 14 » The Bank of England is nationalized.
February 22 » The "Long Telegram", proposing how the United States should deal with the Soviet Union, arrives from the US embassy in Moscow.
October 1 » The Daegu October Incident occurs in Allied-occupied Korea.
December 19 » Start of the First Indochina War.
Day of death September 21, 1987
The temperature on September 21, 1987 was between 15.8 °C and 23.7 °C and averaged 19.6 °C. There was -0.1 mm of rain. There was 3.0 hours of sunshine (24%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the south. 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 22 » Philippine security forces open fire on a crowd of 10,000–15,000 demonstrators at Malacañang Palace, Manila, killing 13.
February 23 » Supernova 1987a is seen in the Large Magellanic Cloud.
February 26 » Iran–Contra affair: The Tower Commission rebukes President Ronald Reagan for not controlling his national security staff.
June 8 » New Zealand's Labour government establishes a national nuclear-free zone under the New Zealand Nuclear Free Zone, Disarmament, and Arms Control Act 1987.
June 17 » With the death of the last individual of the species, the dusky seaside sparrow becomes extinct.
July 4 » In France, former Gestapo chief Klaus Barbie (a.k.a. the "Butcher of Lyon") is convicted of crimes against humanity and sentenced to life imprisonment.
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/I15147.php : accessed January 31, 2026), "Pieter de Boer (1915-1987)".
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