The temperature on January 29, 1911 was between -1.8 °C and 5.9 °C and averaged 3.2 °C. The average windspeed was 2 Bft (weak wind) and was prevailing from the east-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.
April 6 » During the Battle of Deçiq, Dedë Gjon Luli Dedvukaj, leader of the Malësori Albanians, raises the Albanian flag in the town of Tuzi, Montenegro, for the first time after George Kastrioti (Skanderbeg).
November 1 » World's first combat aerial bombing mission takes place in Libya during the Italo-Turkish War. Second Lieutenant Giulio Gavotti of Italy drops several small bombs.
December 9 » A mine explosion near Briceville, Tennessee, kills 84 miners despite rescue efforts led by the United States Bureau of Mines.
December 29 » Mongolia gains independence from the Qing dynasty, enthroning 8th Jebtsundamba Khutughtu as Khagan of Mongolia.
Day of marriage May 23, 1936
The temperature on May 23, 1936 was between 2.1 °C and 16.7 °C and averaged 10.3 °C. There was 8.0 hours of sunshine (50%). The average windspeed was 2 Bft (weak wind) and was prevailing from the north-northeast. Source: KNMI
April 3 » Bruno Richard Hauptmann is executed for the kidnapping and death of Charles Augustus Lindbergh, Jr., the baby son of pilot Charles Lindbergh.
July 22 » Spanish Civil War: The Popular Executive Committee of Valencia takes power in the Valencian Community.
August 3 » Jesse Owens wins the 100 metre dash, defeating Ralph Metcalfe, at the Berlin Olympics.
August 4 » Prime Minister of Greece Ioannis Metaxas suspends parliament and the Constitution and establishes the 4th of August Regime.
October 26 » The first electric generator at Hoover Dam goes into full operation.
December 11 » Abdication Crisis: Edward VIII's abdication as King of the United Kingdom and the British Dominions beyond the Seas, and Emperor of India, becomes effective.
Day of death October 5, 1971
The temperature on October 5, 1971 was between 1.0 °C and 14.3 °C and averaged 7.6 °C. There was 9.7 hours of sunshine (85%). The partly clouded was. The average windspeed was 2 Bft (weak wind) and was prevailing from the east. Source: KNMI
February 2 » The international Ramsar Convention for the conservation and sustainable utilization of wetlands is signed in Ramsar, Mazandaran, Iran.
April 1 » Bangladesh Liberation War: The Pakistan Army massacre over 1,000 people in Keraniganj Upazila, Bangladesh.
July 5 » The Twenty-sixth Amendment to the United States Constitution, lowering the voting age from 21 to 18 years, is formally certified by President Richard Nixon.
October 27 » The Democratic Republic of the Congo is renamed Zaire.
November 10 » In Cambodia, Khmer Rouge forces attack the city of Phnom Penh and its airport, killing 44, wounding at least 30 and damaging nine aircraft.
December 14 » Bangladesh Liberation War: Over 200 of East Pakistan's intellectuals are executed by the Pakistan Army and their local allies. (The date is commemorated in Bangladesh as Martyred Intellectuals Day.)
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/I121199.php : accessed February 20, 2026), "Sietze Zijlstra (1911-1971)".
Copy warning
Genealogical publications are copyright protected. Although data is often retrieved from public archives, the searching, interpreting, collecting, selecting and sorting of the data results in a unique product. Copyright protected work may not simply be copied or republished.
Please stick to the following rules
Request permission to copy data or at least inform the author, chances are that the author gives permission, often the contact also leads to more exchange of data.
Do not use this data until you have checked it, preferably at the source (the archives).
State from whom you have copied the data and ideally also his/her original source.