The temperature on July 23, 1911 was between 14.7 °C and 25.0 °C and averaged 19.8 °C. There was 11.4 hours of sunshine (71%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
May 19 » Parks Canada, the world's first national park service, is established as the Dominion Parks Branch under the Department of the Interior.
August 29 » Ishi, considered the last Native American to make contact with European Americans, emerges from the wilderness of northeastern California.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
September 24 » His Majesty's Airship No. 1, Britain's first rigid airship, is wrecked by strong winds before her maiden flight at Barrow-in-Furness.
October 10 » The day after a bomb explodes prematurely, the Wuchang Uprising begins against the Chinese monarchy.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
Day of marriage May 20, 1936
The temperature on May 20, 1936 was between 8.4 °C and 19.1 °C and averaged 13.2 °C. There was 12.2 hours of sunshine (77%). The average windspeed was 4 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 20 » King George V of the United Kingdom dies. His eldest son succeeds to the throne, becoming Edward VIII. The title Prince of Wales is not used for another 22 years.
March 29 » Adolf Hitler receives 99% of the votes in the 1936 German parliamentary election and referendum.
August 3 » A fire wipes out Kursha-2 in the Meshchera Lowlands, Ryazan Oblast, Russia, killing 1,200 and leaving only 20 survivors.
September 9 » The crews of Portuguese Navy frigate NRPAfonso de Albuquerque and destroyer Dão mutinied against the Salazar dictatorship's support of General Franco's coup and declared their solidarity with the Spanish Republic.
November 20 » José Antonio Primo de Rivera, founder of the Falange, is killed by a republican execution squad.
December 23 » Spanish Civil War: The Spanish Republic legalizes the Regional Defence Council of Aragon.
Day of death March 1, 1991
The temperature on March 1, 1991 was between 0.7 °C and 8.6 °C and averaged 4.1 °C. There was 2.9 mm of rain during 4.0 hours. There was 2.0 hours of sunshine (18%). The almost completely overcast was. The average windspeed was 1 Bft (weak wind) and was prevailing from the east-northeast. 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 20 » In the Albanian capital Tirana, a gigantic statue of Albania's long-time leader, Enver Hoxha, is brought down by mobs of angry protesters.
April 5 » An ASA EMB 120 crashes in Brunswick, Georgia, killing all 23 aboard including Sen. John Tower and astronaut Sonny Carter.
May 26 » Lauda Air Flight 004 breaks apart in mid-air and crashes in the Phu Toei National Park in Thailand, killing all 223 people on board.
August 19 » Dissolution of the Soviet Union, August Coup: Soviet President Mikhail Gorbachev is placed under house arrest while on holiday in the town of Foros, Ukraine.
September 6 » The Russian parliament approves the name change of Leningrad back to Saint Petersburg. The change is effective October 1, 1991.
September 6 » The Soviet Union recognizes the independence of the Baltic states Estonia, Latvia, and Lithuania.
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/I131388.php : accessed February 23, 2026), "Johannes Potstra (1911-1991)".
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