The temperature on February 12, 1885 was about 8.3 °C. The air pressure was 1 kgf/m2 and came mainly from the south-southwest. The airpressure was 76 cm mercury. The atmospheric humidity was 94%. 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 8 » The first government-approved Japanese immigrants arrived in Hawaii.
March 26 » The Métis people of the District of Saskatchewan under Louis Riel begin the North-West Rebellion against Canada.
April 3 » Gottlieb Daimler is granted a German patent for his engine design.
September 22 » Lord Randolph Churchill makes a speech in Ulster in opposition to the Irish Home Rule movement.
October 13 » The Georgia Institute of Technology is founded in Atlanta, Georgia.
November 17 » Serbo-Bulgarian War: The decisive Battle of Slivnitsa begins.
Day of marriage June 24, 1909
The temperature on June 24, 1909 was between 9.2 °C and 17.6 °C and averaged 13.3 °C. There was 9.8 mm of rain. There was 3.5 hours of sunshine (21%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 22 » The sixteen battleships of the Great White Fleet, led by USSConnecticut, return to the United States after a voyage around the world.
April 9 » The U.S. Congress passes the Payne–Aldrich Tariff Act.
August 24 » Workers start pouring concrete for the Panama Canal.
August 30 » Burgess Shale fossils are discovered by Charles Doolittle Walcott.
November 18 » Two United States warships are sent to Nicaragua after 500 revolutionaries (including two Americans) are executed by order of José Santos Zelaya.
December 4 » The Montreal Canadiens ice hockey club, the oldest surviving professional hockey franchise in the world, is founded as a charter member of the National Hockey Association.
Day of death March 31, 1960
The temperature on March 31, 1960 was between 4.0 °C and 10.3 °C and averaged 6.8 °C. There was 0.1 hours of sunshine (1%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the north. Source: KNMI
January 23 » The bathyscaphe USS Trieste breaks a depth record by descending to 10,911 metres (35,797ft) in the Pacific Ocean.
March 22 » Arthur Leonard Schawlow and Charles Hard Townes receive the first patent for a laser.
April 21 » Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro.
May 9 » The Food and Drug Administration announces it will approve birth control as an additional indication for Searle's Enovid, making Enovid the world's first approved oral contraceptive pill.
July 4 » Due to the post-Independence Day admission of Hawaii as the 50th U.S. state on August 21, 1959, the 50-star flag of the United States debuts in Philadelphia, almost ten and a half months later (see Flag Acts (United States)).
July 11 » To Kill a Mockingbird by Harper Lee is first published, in the United States.
Day of burial April 4, 1960
The temperature on April 4, 1960 was between 5.5 °C and 14.0 °C and averaged 10.2 °C. There was 0.1 mm of rain during 0.2 hours. There was 2.1 hours of sunshine (16%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
February 8 » Queen Elizabeth II of the United Kingdom issues an Order-in-Council, stating that she and her family would be known as the House of Windsor, and that her descendants will take the name Mountbatten-Windsor.
May 15 » The Soviet Union launches Sputnik 4.
July 4 » Due to the post-Independence Day admission of Hawaii as the 50th U.S. state on August 21, 1959, the 50-star flag of the United States debuts in Philadelphia, almost ten and a half months later (see Flag Acts (United States)).
August 16 » Cyprus gains its independence from the United Kingdom.
September 5 » Muhammad Ali (then known as Cassius Clay) wins the gold medal in the light heavyweight boxing competition at the Olympic Games in Rome.
November 11 » A military coup against President Ngô Đình Diệm of South Vietnam is crushed.
When copying data from this family tree, please include a reference to the origin: Freek van Loon, "Family tree Van Loon", database, Genealogy Online (https://www.genealogieonline.nl/van-loon-stamboom/I25.php : accessed February 15, 2026), "Petrus van der Ploeg (1885-1960)".
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