The temperature on May 13, 1887 was about 9.2 °C. There was 2 mm of rain. The air pressure was 48 kgf/m2 and came mainly from the north-northwest. The airpressure was 76 cm mercury. The atmospheric humidity was 78%. Source: KNMI
In The Netherlands , there was from April 23, 1884 to April 21, 1888 the cabinet Heemskerk, with Mr. J. Heemskerk Azn. (conservatief) as prime minister.
February 2 » In Punxsutawney, Pennsylvania the first Groundhog Day is observed.
February 23 » The French Riviera is hit by a large earthquake, killing around 2,000.
April 28 » A week after being arrested by the Prussian Secret Police, French police inspector Guillaume Schnaebelé is released on order of William I, German Emperor, defusing a possible war.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
September 5 » A fire at the Theatre Royal, Exeter, kills 186.
October 1 » Balochistan is conquered by the British Empire.
Day of death June 17, 1968
The temperature on June 17, 1968 was between 11.9 °C and 18.6 °C and averaged 15.4 °C. There was 8.8 mm of rain during 1.3 hours. There was 0.2 hours of sunshine (1%). The partly or heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
February 1 » Canada's three military services, the Royal Canadian Navy, the Canadian Army and the Royal Canadian Air Force, are unified into the Canadian Forces.
March 31 » American President Lyndon B. Johnson speaks to the nation of "Steps to Limit the War in Vietnam" in a television address. At the conclusion of his speech, he announces: "I shall not seek, and I will not accept, the nomination of my party for another term as your President."
June 5 » Presidential candidate Robert F. Kennedy is assassinated by Sirhan Sirhan.
July 1 » Formal separation of the United Auto Workers from the AFL–CIO in the United States.
November 1 » The Motion Picture Association of America's film rating system is officially introduced, originating with the ratings G, M, R, and X.
December 20 » The Zodiac Killer kills Betty Lou Jenson and David Faraday in Vallejo, California.
Day of burial June 19, 1968
The temperature on June 19, 1968 was between 12.0 °C and 24.3 °C and averaged 18.2 °C. There was 2.6 mm of rain during 1.1 hours. There was 7.0 hours of sunshine (42%). The partly clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 24 » Vietnam War: The 1st Australian Task Force launches Operation Coburg against the North Vietnamese Army and Viet Cong during wider fighting around Long Bình and Biên Hòa.
April 4 » A.E.K. Athens B.C. becomes the first Greek team to win the European Basketball Cup.
April 11 » Assassination attempt on Rudi Dutschke, leader of the German student movement.
June 9 » U.S. President Lyndon B. Johnson declares a national day of mourning following the assassination of Senator Robert F. Kennedy.
November 26 » Vietnam War: United States Air Force helicopter pilot James P. Fleming rescues an Army Special Forces unit pinned down by Viet Cong fire. He is later awarded the Medal of Honor.
December 25 » Kilvenmani massacre: Forty-four Dalits (untouchables) are burnt to death in Kizhavenmani village, Tamil Nadu, a retaliation for a campaign for higher wages by Dalit laborers.
When copying data from this family tree, please include a reference to the origin: Johan Jonker, "Family tree Jonker", database, Genealogy Online (https://www.genealogieonline.nl/jonker-stamboom/I286.php : accessed January 13, 2026), "Klaas Dubbeld (1887-1968)".
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