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 marriage April 21, 1777
The temperature on April 21, 1777 was about 7.0 °C. There was 22 mm of rainWind direction mainly south-southeast. Weather type: betrokken regen. Source: KNMI
January 3 » American General George Washington defeats British General Lord Cornwallis at the Battle of Princeton.
July 31 » The U.S. Second Continental Congress passes a resolution that the services of Gilbert du Motier, Marquis de Lafayette "be accepted, and that, in consideration of his zeal, illustrious family and connexions, he have the rank and commission of major-general of the United States."
October 22 » American Revolutionary War: American defenders of Fort Mercer on the Delaware River repulse repeated Hessian attacks in the Battle of Red Bank.
November 29 » San Jose, California, is founded as Pueblo de San José de Guadalupe by José Joaquín Moraga. It is the first civilian settlement, or pueblo, in Alta California.
December 16 » Virginia becomes the first state to ratify the Articles of Confederation. [1]
December 19 » American Revolutionary War: George Washington's Continental Army goes into winter quarters at Valley Forge, Pennsylvania.
When copying data from this family tree, please include a reference to the origin: Ronald van 't Hoff, "Family tree Van 't Hoff - Zondag - Bosch - de Zwaan - vd Kolk - Westhuis - Plomp", database, Genealogy Online (https://www.genealogieonline.nl/stamboom-van-t-hoff/I29892.php : accessed February 19, 2026), "Gerridina Buijsman (1752-± 1805)".
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