The temperature on July 20, 1905 was between 8.4 °C and 22.4 °C and averaged 15.8 °C. There was 11.1 hours of sunshine (69%). The average windspeed was 2 Bft (weak wind) and was prevailing from the northwest. Source: KNMI
In The Netherlands , there was from August 1, 1901 to August 16, 1905 the cabinet Kuijper, with Dr. A. Kuijper (AR) as prime minister.
In The Netherlands , there was from August 17, 1905 to February 11, 1908 the cabinet De Meester, with Mr. Th. de Meester (unie-liberaal) as prime minister.
June 30 » Albert Einstein sends the article On the Electrodynamics of Moving Bodies, in which he introduces special relativity, for publication in Annalen der Physik.
September 5 » Russo-Japanese War: In New Hampshire, United States, the Treaty of Portsmouth, mediated by U.S. President Theodore Roosevelt, ends the war.
October 30 » Czar Nicholas II issues the October Manifesto, granting the Russian peoples basic civil liberties and the right to form a duma. (October 17 in the Julian calendar)
November 18 » Prince Carl of Denmark becomes King Haakon VII of Norway.
November 21 » Albert Einstein's paper that leads to the mass–energy equivalence formula, E=mc², is published in the journal Annalen der Physik.
December 9 » In France, the law separating church and state is passed.
Day of death April 12, 1979
The temperature on April 12, 1979 was between 7.1 °C and 16.5 °C and averaged 11.3 °C. There was 3.8 mm of rain during 2.5 hours. There was 5.5 hours of sunshine (40%). The partly or heavily clouded was. The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
In The Netherlands , there was from Monday, December 19, 1977 to Friday, September 11, 1981 the cabinet Van Agt I, with Mr. A.A.M. van Agt (CDA/KVP) as prime minister.
February 18 » Richard Petty wins a then-record sixth Daytona 500 after leaders Donnie Allison and Cale Yarborough crash on the final lap of the first NASCAR race televised live flag-to-flag.
March 16 » Sino-Vietnamese War: The People's Liberation Army crosses the border back into China, ends the war.
March 25 » The first fully functional Space Shuttle orbiter, Columbia, is delivered to the John F. Kennedy Space Center to be prepared for its first launch.
July 17 » Nicaraguan dictator General Anastasio Somoza Debayle resigns and flees to Miami, Florida, United States.
November 10 » A 106-car Canadian Pacific freight train carrying explosive and poisonous chemicals from Windsor, Ontario, Canada derails in Mississauga, Ontario, just west of Toronto, causing a massive explosion and the largest peacetime evacuation in Canadian history and one of the largest in North American history.
December 12 » The 8.2 Mw Tumaco earthquake shakes Colombia and Ecuador with a maximum Mercalli intensity of IX (Violent), killing 300–600, and generating a large tsunami.
When copying data from this family tree, please include a reference to the origin: Charles Olson, "Olson's Tree", database, Genealogy Online (https://www.genealogieonline.nl/olsons-tree/P6510.php : accessed January 3, 2026), "Henry Collins Gwynne (1905-1979)".
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