1679 followed by 1680
1679 (MDCLXXIX) was a common year starting on Sunday of the Gregorian calendar and a common year starting on Wednesday of the Julian calendar, the 1679th year of the Common Era (CE) and Anno Domini (AD) designations, the 679th  year of the 2nd millennium, the 79th  year of the 17th century, and the  10th  and last year of the 1670s decade. As of the start of 1679, the Gregorian calendar was 10 days ahead of the Julian calendar, which remained in localized use until 1923.Events
January–March
January 24 – King Charles II of England dissolves the "Cavalier Parliament", after nearly 18 years.
February 3 – Moroccan troops from Fez are killed, along with their commander Moussa ben Ahmed ben Youssef, in a battle against rebels in the Jbel Saghro mountain range, but Moroccan Sultan Ismail Ibn Sharif is able to negotiate a ceasefire allowing his remaining troops safe passage back home.
February 5 – The Treaty of Celle is signed between France and Sweden on one side, and the Holy Roman Empire, at the town of Celle in Saxony (now in Germany).  Sweden's sovereignty over Bremen-Verden is confirmed and Sweden cedes control of Thedinghausen and Dörverden to the Germans.
February 19 – Ajit Singh Rathore becomes the new Maharaja of the Jodhpur State a principality in India also known as Marwar, now located in Rajasthan state.
March 6 – In England, the "Habeas Corpus Parliament" (or "First Exclusion Parliament") is opened. It adjourns on May 27. On July 12, while in recess, the parliament is dissolved. by royal prerogative, to prevent it from passing a bill excluding the king's brother, the Catholic James, Duke of York, from the succession to the English throne, as part of the Exclusion Crisis.
March 12 – Catherine Deshayes Monvoisin, commonly called "La Voisin" and the suspected killer of over 1,000 people in France by poisoning, is arrested outside of the Church of Notre-Dame-de-Bonne-Nouvelle in Paris and imprisoned at Vincennes for the next 11 months.  After her conviction, she is publicly burned at the stake on February 22, 1680.