The temperature on February 15, 1887 was about 4.2 °C. The air pressure was 18 kgf/m2 and came mainly from the east. The airpressure was 77 cm mercury. The atmospheric humidity was 44%. 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.
January 20 » The United States Senate allows the Navy to lease Pearl Harbor as a naval base.
May 9 » Buffalo Bill Cody's Wild West Show opens in London.
June 23 » The Rocky Mountains Park Act becomes law in Canada creating the nation's first national park, Banff National Park.
July 6 » David Kalākaua, monarch of the Kingdom of Hawaii, is forced to sign the Bayonet Constitution, which transfers much of the king's authority to the Legislature of the Kingdom of Hawaii.
October 1 » Balochistan is conquered by the British Empire.
November 9 » The United States receives rights to Pearl Harbor, Hawaii.
Day of marriage March 7, 1912
The temperature on March 7, 1912 was between 2.4 °C and 9.2 °C and averaged 5.4 °C. There was 3.2 mm of rain. There was 2.5 hours of sunshine (22%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west. Source: KNMI
February 14 » The U.S. Navy commissions its first class of diesel-powered submarines.
March 6 » Italo-Turkish War: Italian forces become the first to use airships in war, as two dirigibles drop bombs on Turkish troops encamped at Janzur, from an altitude of 6,000 feet.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
July 30 » Japan's Emperor Meiji dies and is succeeded by his son Yoshihito, who is now known as the Emperor Taishō.
October 24 » First Balkan War: The Battle of Kumanovo concludes with the Serbian victory against the Ottoman Empire.
November 12 » The frozen bodies of Robert Scott and his men are found on the Ross Ice Shelf in Antarctica.
Day of death November 20, 1954
The temperature on November 20, 1954 was between -2.5 °C and 5.5 °C and averaged 1.5 °C. There was 5.6 hours of sunshine (65%). The partly clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south east. Source: KNMI
February 10 » U.S. President Dwight D. Eisenhower warns against United States intervention in Vietnam.
April 1 » United States President Dwight D. Eisenhower authorizes the creation of the United States Air Force Academy in Colorado.
July 20 » Germany: Otto John, head of West Germany's secret service, defects to East Germany.
October 10 » The Minister of Foreign Affairs of the Sultanate of Muscat, Neil Innes, sends a signal to the Sultanate's forces, accompanied with oil explorers, to penetrate Fahud, marking the beginning of Jebel Akhdar War between the Imamate of Oman and the Sultanate of Muscat.
November 19 » Télé Monte Carlo, Europe's oldest private television channel, is launched by Prince Rainier III.
November 22 » The Humane Society of the United States is founded.
When copying data from this family tree, please include a reference to the origin: J. van Broekhoven, "Database Van Broekhoven", database, Genealogy Online (https://www.genealogieonline.nl/database-van-broekhoven/I72504.php : accessed February 10, 2026), "Hendrik Koppenol (1887-1954)".
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