1831 (MDCCCXXXI) was a common year starting on Saturday (dominical letter B) of the Gregorian calendar and a common year starting on Thursday (dominical letter D) of the Julian calendar, the 1831st year of the Common Era (CE) and Anno Domini (AD) designations, the 831st year of the 2nd millennium, the thirty-first year of the 19th century, and the second year of the 1830s decade. Note that the Julian day for 1831 is 12 calendar days difference, which continued to be used from 1582 until the complete conversion of the Gregorian calendar was entirely done in 1929.

Events

January–March

April–June

July–September

October–December

Date unknown

Births

January–June

July–December

Date unknown

Deaths

January–June

July–December

Date unknown

Marengo, Napoleon's mount in several battles (b. 1793)