February 29 » King Alaungpaya founds Konbaung Dynasty, the last dynasty of Burmese monarchy.
April 20 » Start of Konbaung–Hanthawaddy War, a new phase in the Burmese Civil War (1740–57).
June 15 » Benjamin Franklin proves that lightning is electricity (traditional date, the exact date is unknown).
September 2 » Great Britain, along with its overseas possessions, adopts the Gregorian calendar.
September 14 » The British Empire adopts the Gregorian calendar, skipping eleven days (the previous day was September 2).
Day of death September 17, 1770
The temperature on September 17, 1770 was about 19.0 °C. Wind direction mainly south-southeast. Weather type: omtrent helder. Special wheather fenomena: veel dauw. Source: KNMI
March 5 » Boston Massacre: Five Americans, including Crispus Attucks, are fatally shot by British troops in an event that would contribute to the outbreak of the American Revolutionary War (also known as the American War of Independence) five years later.
April 19 » Captain James Cook, still holding the rank of lieutenant, sights the eastern coast of what is now Australia.
April 19 » Marie Antoinette marries Louis XVI of France in a proxy wedding.
July 1 » Lexell's Comet is seen closer to the Earth than any other comet in recorded history, approaching to a distance of 0.0146 astronomical units (2,180,000km; 1,360,000mi).
July 5 » The Battle of Chesma between the Russian Empire and the Ottoman Empire begins.
November 14 » James Bruce discovers what he believes to be the source of the Nile.
When copying data from this family tree, please include a reference to the origin: R.A.Hemerik, "Descendants Hemerik-Broekhuizen-Huner-Koper-Barink", database, Genealogy Online (https://www.genealogieonline.nl/parenteel-hemerik/I1235.php : accessed January 20, 2026), "Catharina Gerritsdr. Arentsveld (1732-1770)".
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