The temperature on September 28, 1913 was between 8.9 °C and 20.0 °C and averaged 14.0 °C. There was 9.5 hours of sunshine (80%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the east-southeast. Source: KNMI
In The Netherlands , there was from February 12, 1908 to August 29, 1913 the cabinet Heemskerk, with Mr. Th. Heemskerk (AR) as prime minister.
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.
February 19 » Pedro Lascuráin becomes President of Mexico for 45 minutes; this is the shortest term to date of any person as president of any country.
March 3 » Thousands of women march in the Woman Suffrage Procession in Washington, D.C.
June 1 » The Greek–Serbian Treaty of Alliance is signed, paving the way for the Second Balkan War.
June 24 » Greece and Serbia annul their alliance with Bulgaria.
July 12 » Serbian forces begin their siege of the Bulgarian city of Vidin; the siege is later called off when the war ends.
October 14 » Senghenydd colliery disaster, the United Kingdom's worst coal mining accident, claims the lives of 439 miners.
Day of death June 22, 1965
The temperature on June 22, 1965 was between 14.0 °C and 19.7 °C and averaged 16.2 °C. There was 5.3 mm of rain during 2.7 hours. There was 3.2 hours of sunshine (19%). The heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
February 9 » The United States Marine Corps sends a MIM-23 Hawk missile battalion to South Vietnam, the first American troops in-country without an official advisory or training mission.
August 5 » The Indo-Pakistani War of 1965 begins as Pakistani soldiers cross the Line of Control dressed as locals.
August 18 » Vietnam War: Operation Starlite begins: United States Marines destroy a Viet Cong stronghold on the Van Tuong peninsula in the first major American ground battle of the war.
September 7 » Vietnam War: In a follow-up to August's Operation Starlite, United States Marines and South Vietnamese forces initiate Operation Piranha on the Batangan Peninsula.
November 24 » Joseph-Désiré Mobutu seizes power in the Democratic Republic of the Congo and becomes President; he rules the country (which he renames Zaire in 1971) for over 30 years, until being overthrown by rebels in 1997.
December 9 » Kecksburg UFO incident: A fireball is seen from Michigan to Pennsylvania; witnesses report something crashing in the woods near Pittsburgh.
When copying data from this family tree, please include a reference to the origin: Hendrik de Graaf, "Family tree Plugboer", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-plugboer/I17334.php : accessed February 26, 2026), "Hendrik Valkenburg (1913-1965)".
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