The temperature on July 13, 1911 was between 12.2 °C and 22.8 °C and averaged 17.5 °C. There was 0.3 mm of rain. There was 6.8 hours of sunshine (42%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the north-northeast. Source: KNMI
January 18 » Eugene B. Ely lands on the deck of the USSPennsylvania anchored in San Francisco Bay, the first time an aircraft landed on a ship.
February 18 » The first official flight with airmail takes place from Allahabad, United Provinces, British India (now India), when Henri Pequet, a 23-year-old pilot, delivers 6,500 letters to Naini, about 10 kilometres (6.2mi) away.
May 30 » At the Indianapolis Motor Speedway, the first Indianapolis 500 ends with Ray Harroun in his Marmon Wasp becoming the first winner of the 500-mile auto race.
July 1 » Germany despatches the gunship SMSPanther to Morocco, sparking the Agadir Crisis.
August 29 » The Canadian Naval Service becomes the Royal Canadian Navy.
December 14 » Roald Amundsen's team, comprising himself, Olav Bjaaland, Helmer Hanssen, Sverre Hassel, and Oscar Wisting, becomes the first to reach the South Pole.
Day of marriage July 1, 1936
The temperature on July 1, 1936 was between 11.9 °C and 23.3 °C and averaged 17.0 °C. There was 5.6 mm of rain during 2.5 hours. There was 2.9 hours of sunshine (17%). The average windspeed was 3 Bft (moderate breeze) and was prevailing from the south. Source: KNMI
January 15 » The first building to be completely covered in glass, built for the Owens-Illinois Glass Company, is completed in Toledo, Ohio.
February 10 » Second Italo-Abyssinian War: Italian troops launched the Battle of Amba Aradam against Ethiopian defenders.
May 28 » Alan Turing submits On Computable Numbers for publication.
July 21 » Spanish Civil War: The Central Committee of Antifascist Militias of Catalonia is constituted, establishing an anarcho-syndicalist economy in Catalonia.
October 4 » The British Union of Fascists and various anti-fascist organizations violently clash in the Battle of Cable Street.
October 26 » The first electric generator at Hoover Dam goes into full operation.
When copying data from this family tree, please include a reference to the origin: Elly Gelderman, "Family tree Gelderman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-gelderman/I7623.php : accessed February 4, 2026), "Maria Roggen (1911-)".
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