- Jan 1 Don Carlos de Gurrea/Aragon becomes Spanish land guardian of S Neth
- Jan 5 Battle at Turkheim (Colmar): French army beats Brandenburg
- Jan 8 1st American commercial corporation chartered (NY Fishing Co)
- Jan 31 Cornelia/Dina Olfaarts found not guilty of witchcraft
- Feb 21 Prince Willem III appointed viceroy of Gelderland
- Mar 2 Prince William III installed as governor of Overijssel
- Mar 4 John Flamsteed appointed 1st Astronomer Royal of England
- Jun 20 Abenaki, Massachusetts, Mohegan and Wampanoag Native Americans form anti-English front under Metacom
Event of Interest
Jun 22 Royal Greenwich Observatory established in England by Charles II
Charles II
- Jun 25 Battle at Rathenow: Brandenburgers beat Sweden
- Jun 28 Battle at Fehrbellin: Brandenburg army beats Sweden
- Aug 6 Russian Tsar Alexis bans foreign hair styles to those below the nobility
- Aug 10 King Charles II and John Flamsteed lay the foundation stone of the Royal Observatory in Greenwich, London
- Aug 10 Portuguese-Jewish synagogue opens in Amsterdam
- Sep 6 Swedish admiral Stenbock sails out with fleet of 66 ships
- Sep 9 New England colonies declare war on Wampanoag indians
- Oct 4 Dutch mathematician Christiaan Huygens patents the pocket watch
Event of Interest
Oct 29 Gottfried Wilhelm Leibniz makes the first use of the long s, ∫, for integral, helping discover integral and differential calculus
Gottfried Wilhelm Leibniz
- Nov 2 A combined attack by the Plymouth, Rhode Island, Massachusetts Bay and Connecticut colonies attacks the Great Swamp Fort, owned by the Narragansetts during King Philip's War
- Nov 4 Storm hits Western Europe: flood in Amsterdam
- Nov 11 German mathematician Gottfried Wilhelm Leibniz demonstrates integral calculus for the first time to find the area under the graph of y = f(x) function
- Nov 14 Pope Clemens X declares Gorcumse martyrs divine
- Nov 22 English king Charles II adjourns Parliament