January 8 » Herman Hollerith is issued US patent #395,791 for the 'Art of Applying Statistics' — his punched card calculator.
February 22 » President Grover Cleveland signs a bill admitting North Dakota, South Dakota, Montana and Washington as U.S. states.
March 23 » The Ahmadiyya Muslim Community is established by Mirza Ghulam Ahmad in Qadian, British India.
March 31 » The Eiffel Tower is officially opened.
July 11 » Tijuana, Mexico, is founded.
November 2 » North Dakota and South Dakota are admitted as the 39th and 40th U.S. states.
Day of marriage August 15, 1912
The temperature on August 15, 1912 was between 7.7 °C and 14.6 °C and averaged 11.9 °C. There was 10.5 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the south-southwest. Source: KNMI
January 6 » German geophysicist Alfred Wegener first presents his theory of continental drift.
January 11 » Immigrant textile workers in Lawrence, Massachusetts, go on strike when wages are reduced in response to a mandated shortening of the work week.
March 5 » Italo-Turkish War: Italian forces are the first to use airships for military purposes, employing them for reconnaissance behind Turkish lines.
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.
March 12 » The Girl Guides (later renamed the Girl Scouts of the USA) are founded in the United States.
December 16 » First Balkan War: The Royal Hellenic Navy defeats the Ottoman Navy at the Battle of Elli.
Day of death September 15, 1969
The temperature on September 15, 1969 was between 13.8 °C and 23.3 °C and averaged 18.3 °C. There was 1.5 hours of sunshine (12%). The heavily clouded was. The average windspeed was 1 Bft (weak wind) and was prevailing from the north. Source: KNMI
March 18 » The United States begins secretly bombing the Sihanouk Trail in Cambodia, used by communist forces to infiltrate South Vietnam.
March 25 » During their honeymoon, John Lennon and Yoko Ono hold their first Bed-In for Peace at the Amsterdam Hilton Hotel (until March 31).
April 3 » Vietnam War: United States Secretary of Defense Melvin Laird announces that the United States will start to "Vietnamize" the war effort.
July 20 » Apollo program: Apollo 11's crew successfully makes the first manned landing on the Moon in the Sea of Tranquility. Americans Neil Armstrong and Buzz Aldrin become the first humans to walk on the Moon six and a half hours later.
November 10 » National Educational Television (the predecessor to the Public Broadcasting Service) in the United States debuts Sesame Street.
November 19 » Association football player Pelé scores his 1,000th goal.
When copying data from this family tree, please include a reference to the origin: Hans Weening, "Family tree Weening", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-weening/I63731.php : accessed October 21, 2026), "Wipke Hoogstra (1889-1969)".
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