May 17 » Louis Jolliet and Jacques Marquette begin exploring the Mississippi River.
June 17 » French explorers Jacques Marquette and Louis Jolliet reach the Mississippi River and become the first Europeans to make a detailed account of its course.
November 11 » Second Battle of Khotyn in Ukraine: Polish–Lithuanian Commonwealth forces under the command of Jan Sobieski defeat the Ottoman army. In this battle, rockets made by Kazimierz Siemienowicz are successfully used.
January 26 » The 8.7–9.2 Mw Cascadia earthquake takes place off the west coast of North America, as evidenced by Japanese records.
February 27 » The island of New Britain is discovered by Europeans.
February 28 » Today is followed by March 1 in Sweden, thus creating the Swedish calendar.
March 1 » Sweden introduces its own Swedish calendar, in an attempt to gradually merge into the Gregorian calendar, reverts to the Julian calendar on this date in 1712, and introduces the Gregorian calendar on this date in 1753.
Day of burial December 30, 1727
The temperature on December 30, 1727 was about -7.0 °C. Wind direction mainly southwest. Weather type: helder. Source: KNMI
When copying data from this family tree, please include a reference to the origin: Berry van Osch, "Family tree Van Osch", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-osch/I22981.php : accessed December 24, 2025), "Embrecht Marcelis Embrecht Haermans (-1727)".
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