January 2 » American statesman and diplomat John Hay announces the Open Door Policy to promote trade with China.
January 31 » Datu Muhammad Salleh is killed in Kampung Teboh, Tambunan, ending the Mat Salleh Rebellion.
April 30 » Hawaii becomes a territory of the United States, with Sanford B. Dole as governor.
June 14 » The second German Naval Law calls for the Imperial German Navy to be doubled in size, resulting in an Anglo-German naval arms race.
July 27 » Kaiser Wilhelm II makes a speech comparing Germans to Huns; for years afterwards, "Hun" would be a disparaging name for Germans.
December 14 » Quantum mechanics: Max Planck presents a theoretical derivation of his black-body radiation law.
Day of marriage November 30, 1928
The temperature on November 30, 1928 was between 2.8 °C and 9.8 °C and averaged 7.2 °C. There was 9.6 mm of rain. The average windspeed was 4 Bft (moderate breeze) and was prevailing from the west-northwest. Source: KNMI
January 1 » Boris Bazhanov defects through Iran. He is the only assistant of Joseph Stalin's secretariat to have defected from the Eastern Bloc.
August 27 » The Kellogg–Briand Pact outlawing war is signed by fifteen nations. Ultimately sixty-one nations will sign it.
September 17 » The Okeechobee hurricane strikes southeastern Florida, killing more than 2,500 people.
September 27 » The Republic of China is recognized by the United States.
November 1 » The Law on the Adoption and Implementation of the Turkish Alphabet, replaces the Arabic alphabet with the Latin alphabet.
December 17 » Indian revolutionaries Bhagat Singh, Sukhdev Thapar and Shivaram Rajguru assassinate British police officer James Saunders in Lahore, Punjab, to avenge the death of Lala Lajpat Rai at the hands of the police. The three were executed in 1931.
When copying data from this family tree, please include a reference to the origin: Peter Keesman, "Family tree Keesman", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-keesman/I14489.php : accessed January 30, 2026), "Gerardina Alida Cornelia Wimmers (1900-)".
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