The temperature on September 7, 1926 was between 15.0 °C and 19.3 °C and averaged 16.1 °C. There was 24.2 mm of rain. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
January 8 » Abdul-Aziz ibn Saud is crowned King of Hejaz.
January 26 » The first demonstration of the television by John Logie Baird.
April 21 » Al-Baqi cemetery, former site of the mausoleum of four Shi'a Imams, is leveled to the ground by Wahhabis.
May 12 » The Italian-built airship Norge becomes the first vessel to fly over the North Pole.
May 25 » Sholom Schwartzbard assassinates Symon Petliura, the head of the government of the Ukrainian People's Republic, which is in government-in-exile in Paris.
November 25 » The deadliest November tornado outbreak in U.S. history kills 76 people and injures more than 400.
Day of marriage August 2, 1957
The temperature on August 2, 1957 was between 10.2 °C and 19.6 °C and averaged 15.9 °C. There was 13.0 hours of sunshine (84%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the northeast. Source: KNMI
April 11 » United Kingdom agrees to Singaporean self-rule.
June 9 » First ascent of Broad Peak by Fritz Wintersteller, Marcus Schmuck, Kurt Diemberger, and Hermann Buhl.
July 6 » John Lennon and Paul McCartney meet for the first time, as teenagers at Woolton Fete, three years before forming the Beatles.
July 28 » Heavy rain and a mudslide in Isahaya, western Kyushu, Japan, kills 992.
October 29 » Israel's prime minister David Ben-Gurion and five of his ministers are injured when Moshe Dwek throws a grenade into Israel's Knesset.
November 3 » Sputnik program: The Soviet Union launches Sputnik 2. On board is the first animal to enter orbit, a dog named Laika.
Day of death May 15, 2018
The temperature on May 15, 2018 was between 12.6 °C and 24.6 °C and averaged 19.2 °C. There was 14.3 hours of sunshine (91%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 3 » For the first time in history all five major storm surge gates in the Netherlands are closed simultaneously in the wake of a storm.
January 23 » A 7.9 Mw earthquake occurs in the Gulf of Alaska. It is tied as the sixth-largest earthquake ever recorded in the United States, but there are no reports of significant damage or fatalities.
February 14 » A shooting at Marjory Stoneman Douglas High School in Parkland, Florida is one of the deadliest school massacres with 17 fatalities and 15 injuries.
February 14 » Jacob Zuma resigns as President of South Africa.
May 25 » Ireland votes to repeal the Eighth Amendment of their constitution that prohibits abortion in all but a few cases, choosing to replace it with the Thirty-sixth Amendment of the Constitution of Ireland.
October 12 » Princess Eugenie marries Jack Brooksbank at St. George's Chapel, Windsor Castle.
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/I13337.php : accessed February 2, 2026), "Hendrik Pronk (1926-2018)".
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