The temperature on February 1, 1911 was between -8.0 °C and 1.7 °C and averaged -2.1 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northwest. Source: KNMI
January 12 » The University of the Philippines College of Law is formally established; three future Philippine presidents are among the first enrollees.
April 8 » Dutch physicist Heike Kamerlingh Onnes discovers superconductivity.
May 21 » President of Mexico Porfirio Díaz and the revolutionary Francisco Madero sign the Treaty of Ciudad Juárez to put an end to the fighting between the forces of both men, concluding the initial phase of the Mexican Revolution.
May 23 » The New York Public Library is dedicated.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
November 19 » The Doom Bar in Cornwall claimed two ships, Island Maid and Angele, the latter killing the entire crew except the captain.
Day of death June 23, 1993
The temperature on June 23, 1993 was between 7.7 °C and 18.2 °C and averaged 13.0 °C. There was -0.1 mm of rain. There was 2.0 hours of sunshine (12%). The partly or heavily clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from Tuesday, November 7, 1989 to Monday, August 22, 1994 the cabinet Lubbers III, with Drs. R.F.M. Lubbers (CDA) as prime minister.
February 26 » World Trade Center bombing: In New York City, a truck bomb parked below the North Tower of the World Trade Center explodes, killing six and injuring over a thousand people.
March 12 » North Korea announces that it will withdraw from the Treaty on the Non-Proliferation of Nuclear Weapons and refuses to allow inspectors access to its nuclear sites.
April 11 » Four hundred fifty prisoners rioted at the Southern Ohio Correctional Facility in Lucasville, Ohio, and continued to do so for ten days, citing grievances related to prison conditions, as well as the forced vaccination of Nation of Islam prisoners (for tuberculosis) against their religious beliefs.
September 22 » A Transair Georgian Airlines Tu-154 is shot down by a missile in Sukhumi, Georgia.
November 17 » In Nigeria, General Sani Abacha ousts the government of Ernest Shonekan in a military coup.
December 30 » Israel establishes diplomatic relations with Vatican City and also upgrades to full diplomatic relations with Ireland.
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/I199625.php : accessed October 18, 2026), "Rensktje Koster (1911-1993)".
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