The temperature on May 20, 1912 was between 10.1 °C and 19.0 °C and averaged 14.0 °C. There was 5.8 mm of rain. There was 3.3 hours of sunshine (21%). The average windspeed was 2 Bft (weak wind) and was prevailing from the south-southeast. Source: KNMI
March 30 » Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.
May 13 » The Royal Flying Corps, the forerunner of the Royal Air Force, is established in the United Kingdom.
September 4 » Albanian rebels succeed in their revolt when the Ottoman Empire agrees to fulfill their demands
October 11 » First Balkan War: The day after the Battle of Sarantaporo, Greek troops liberate the city of Kozani.
October 26 » First Balkan War: The Ottomans lose the cities of Thessaloniki and Skopje.
November 12 » King George I of Greece makes a triumphal entry into Thessaloniki after its liberation from 482 years of Ottoman rule.
Day of marriage July 5, 1930
The temperature on July 5, 1930 was between 13.0 °C and 22.6 °C and averaged 18.3 °C. There was 0.2 mm of rain during 0.3 hours. There was 5.0 hours of sunshine (30%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
In The Netherlands , there was from August 10, 1929 to May 26, 1933 the cabinet Ruys de Beerenbrouck III, with Jonkheer mr. Ch.J.M. Ruys de Beerenbrouck (RKSP) as prime minister.
April 22 » The United Kingdom, Japan and the United States sign the London Naval Treaty regulating submarine warfare and limiting shipbuilding.
May 1 » "Pluto" is officially proposed for the name of the newly-discovered dwarf planet Pluto by Vesto Slipher in the Lowell Observatory Observation Circular. The name quickly catches on.
May 7 » The 7.1 Mw Salmas earthquake shakes northwestern Iran and southeastern Turkey with a maximum Mercalli intensity of IX (Violent). Up to three-thousand people were killed.
June 9 » A Chicago Tribune reporter, Jake Lingle, is killed during rush hour at the Illinois Central train station by Leo Vincent Brothers, allegedly over a $100,000 gambling debt owed to Al Capone.
July 7 » Industrialist Henry J. Kaiser begins construction of Boulder Dam (now known as Hoover Dam).
December 2 » Great Depression: In a State of the Union message, U.S. President Herbert Hoover proposes a $150 million (equivalent to $2,296,000,000 in 2019) public works program to help generate jobs and stimulate the economy.
When copying data from this family tree, please include a reference to the origin: Hendrik Dreyer, "Dreyer Tree", database, Genealogy Online (https://www.genealogieonline.nl/dreyer-tree/I18613.php : accessed January 31, 2026), "Johanna Jacomina Dreyer (1912-)".
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