The temperature on June 29, 1911 was between 11.9 °C and 17.7 °C and averaged 14.7 °C. There was 0.7 mm of rain. There was 2.0 hours of sunshine (12%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the west-southwest. Source: KNMI
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.
August 24 » Manuel de Arriaga is elected and sworn-in as the first President of Portugal.
September 25 » An explosion of badly degraded propellant charges on board the French battleship Liberté detonates the forward ammunition magazines and destroys the ship.
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
December 27 » "Jana Gana Mana", the national anthem of India, is first sung in the Calcutta Session of the Indian National Congress.
Day of death March 16, 2001
The temperature on March 16, 2001 was between 5.1 °C and 9.5 °C and averaged 7.0 °C. There was 0.7 mm of rain during 2.0 hours. There was 0.4 hours of sunshine (3%). The almost completely overcast was. The average windspeed was 2 Bft (weak wind) and was prevailing from the northeast. Source: KNMI
May 25 » Erik Weihenmayer becomes the first blind person to reach the summit of Mount Everest, in the Himalayas, with Dr. Sherman Bull.
June 21 » A federal grand jury in Alexandria, Virginia, indicts 13 Saudis and a Lebanese in the 1996 bombing of the Khobar Towers in Saudi Arabia that killed 19 American servicemen.
July 21 » At the conclusion of a fireworks display on Okura Beach in Akashi, Hyōgo, Japan, 11 people are killed and more than 120 are injured when a pedestrian footbridge connecting the beach to JR Asagiri Station becomes overcrowded and people leaving the event fall down in a domino effect.
July 24 » The Bandaranaike Airport attack is carried out by 14 Tamil Tiger commandos. Eleven civilian and military aircraft are destroyed and 15 are damaged. All 14 commandos are shot dead, while seven soldiers from the Sri Lanka Air Force are killed. In addition, three civilians and an engineer die. This incident slowed the Sri Lankan economy.
December 13 » Sansad Bhavan, the building housing the Indian Parliament, is attacked by terrorists. Twelve people are killed, including the terrorists.
December 22 » Burhanuddin Rabbani, political leader of the Northern Alliance, hands over power in Afghanistan to the interim government headed by President Hamid Karzai.
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/I176333.php : accessed February 13, 2026), "Wiebe Wiersma (1911-2001)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.