February 23 » Cuba leases Guantánamo Bay to the United States "in perpetuity".
August 18 » German engineer Karl Jatho allegedly flies his self-made, motored gliding airplane four months before the first flight of the Wright brothers.
October 6 » The High Court of Australia sits for the first time.
October 31 » The Purdue Wreck, a railroad train collision in Indianapolis, kills 17 people, including 14 players of the Purdue University football team.
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
December 30 » A fire at the Iroquois Theater in Chicago, Illinois kills at least 605.
Christening day September 27, 1903
The temperature on September 27, 1903 was between 6.3 °C and 19.5 °C and averaged 13.3 °C. There was 5.6 hours of sunshine (47%). Source: KNMI
May 29 » In the May Coup, Alexander I, King of Serbia, and Queen Draga, are assassinated in Belgrade by the Black Hand (Crna Ruka) organization.
June 11 » A group of Serbian officers stormed the royal palace and assassinated King Alexander Obrenović and his wife, Queen Draga.
September 27 » The Wreck of the Old 97, an American rail disaster that became the subject of a popular ballad.
November 17 » The Russian Social Democratic Labour Party splits into two groups: The Bolsheviks (Russian for "majority") and Mensheviks (Russian for "minority").
November 18 » The Hay–Bunau-Varilla Treaty is signed by the United States and Panama, giving the United States exclusive rights over the Panama Canal Zone.
December 14 » The Wright brothers make their first attempt to fly with the Wright Flyer at Kitty Hawk, North Carolina.
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/I66470.php : accessed October 14, 2026), "Sietze Mosselaar (1903-)".
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