The temperature on July 13, 1915 was between 8.0 °C and 20.0 °C and averaged 15.0 °C. There was 7.6 hours of sunshine (46%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-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 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.
April 5 » Boxing challenger Jess Willard knocks out Jack Johnson in Havana, Cuba to become the Heavyweight Champion of the World.
July 7 » Colombo Town Guard officer Henry Pedris is executed in British Ceylon for allegedly inciting persecution of Muslims.
July 16 » At Treasure Island on the Delaware River in the United States, the First Order of the Arrow ceremony takes place and the Order of the Arrow is founded to honor American Boy Scouts who best exemplify the Scout Oath and Law.
July 24 » The passenger ship SSEastland capsizes while tied to a dock in the Chicago River. A total of 844 passengers and crew are killed in the largest loss of life disaster from a single shipwreck on the Great Lakes.
November 25 » Albert Einstein presents the field equations of general relativity to the Prussian Academy of Sciences.
Day of death April 21, 1999
The temperature on April 21, 1999 was between 9.3 °C and 17.9 °C and averaged 12.5 °C. There was 10.5 mm of rain during 5.0 hours. There was 7.2 hours of sunshine (51%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 7 » The Senate trial in the impeachment of U.S. President Bill Clinton begins.
February 13 » The last hockey game is played in Maple Leaf Gardens: the Toronto Maple Leafs lose 6–2 to the Chicago Blackhawks.
April 12 » United States President Bill Clinton is cited for contempt of court for giving "intentionally false statements" in a civil lawsuit; he is later fined and disbarred.
July 23 » ANA Flight 61 is hijacked in Tokyo, Japan by Yuji Nishizawa.
July 31 » Discovery Program: Lunar Prospector: NASA intentionally crashes the spacecraft into the Moon, thus ending its mission to detect frozen water on the Moon's surface.
August 10 » Los Angeles Jewish Community Center shooting.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I187548.php : accessed December 29, 2025), "Harmen Siedsma (1915-1999)".
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