February 4 » The Philippine–American War begins with the Battle of Manila.
March 4 » Cyclone Mahina sweeps in north of Cooktown, Queensland, with a 12 metres (39ft) wave that reaches up to 5 kilometres (3.1mi) inland, killing over 300.
May 30 » Pearl Hart, a female outlaw of the Old West, robs a stage coach 30 miles southeast of Globe, Arizona.
June 12 » New Richmond tornado: The eighth deadliest tornado in U.S. history kills 117 people and injures around 200.
July 26 » Ulises Heureaux, the 27th President of the Dominican Republic, is assassinated.
October 11 » The Second Boer War erupts in South Africa between the British-ruled Cape Colony, and the Boer-ruled Transvaal and Orange Free State.
Day of marriage May 14, 1927
The temperature on May 14, 1927 was between 2.4 °C and 10.7 °C and averaged 7.1 °C. There was 2.9 mm of rain. There was -0.1 hours of sunshine (0%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southwest. Source: KNMI
January 27 » Ibn Saud takes the title of King of Nejd.
February 23 » German theoretical physicist Werner Heisenberg writes a letter to fellow physicist Wolfgang Pauli, in which he describes his uncertainty principle for the first time.
March 11 » In New York City, Samuel Roxy Rothafel opens the Roxy Theatre.
May 26 » The last Ford Model T rolls off the assembly line after a production run of 15,007,003 vehicles.
June 27 » Prime Minister of Japan Tanaka Giichi convenes an eleven-day conference to discuss Japan's strategy in China. The Tanaka Memorial, a forged plan for world domination, is later claimed to be a secret report leaked from this conference.
September 18 » The Columbia Broadcasting System goes on the air.
Day of death December 6, 1970
The temperature on December 6, 1970 was between 4.7 °C and 8.8 °C and averaged 6.4 °C. There was 3.8 mm of rain during 3.0 hours. The heavily clouded was. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the southwest. Source: KNMI
April 1 » The first of over 670,000 AMC Gremlins are released into North America to compete with foreign imported cars.
April 24 » China launches Dong Fang Hong I, becoming the fifth nation to put an object into orbit using its own booster.
May 1 » Vietnam War: Protests erupt following the announcement by Richard Nixon that the U.S. and South Vietnamese forces would attack Vietnamese communists in a Cambodian Campaign.
September 9 » A British airliner is hijacked by the Popular Front for the Liberation of Palestine and flown to Dawson's Field in Jordan.
October 9 » The Khmer Republic is proclaimed in Cambodia.
November 10 » Vietnam War: Vietnamization: For the first time in five years, an entire week ends with no reports of American combat fatalities in Southeast Asia.
When copying data from this family tree, please include a reference to the origin: Joop Klavers, "Family tree Klavers", database, Genealogy Online (https://www.genealogieonline.nl/stamboom_klavers/I309131.php : accessed February 7, 2026), "Roelof Horst (1899-1970)".
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