9th » The Act Against Slavery is passed in Upper Canada and the importation of slaves into Lower Canada is prohibited.
13th » Journalist and French revolutionary Jean-Paul Marat is assassinated in his bathtub by Charlotte Corday, a member of the opposing political faction.
22nd » Alexander Mackenzie (explorer) or Alexander Mackenzie reaches the Pacific Ocean becoming the first recorded human to complete a transcontinental crossing of Canada.
23rd » Kingdom of Prussia re-conquers Mainz from France.
29th » John Graves Simcoe decides to build a fort and settlement at Toronto, having sailed into the bay there.