1861

Millennium:	2nd millennium
Centuries:	18th century – 19th century – 20th century
Decades:	1830s 1840s 1850s – 1860s – 1870s 1880s 1890s
Years:	1858 1859 1860 – 1861 – 1862 1863 1864

Lua error in package.lua at line 80: module 'Module:Ancient Olympiads' not found. 1861 (MDCCCLXI) was a common year starting on Tuesday of the Gregorian calendar and a common year starting on Sunday of the Julian calendar, the 1861st year of the Common Era (CE) and Anno Domini (AD) designations, the 861st year of the 2nd millennium, the 61st year of the 19th century, and the 2nd year of the 1860s decade. As of the start of 1861, the Gregorian calendar was 12 days ahead of the Julian calendar, which remained in localized use until 1923.

Events

The American Civil War begins.
January 1 - Benito Juárez captures Mexico City.
March 19 – The First Taranaki War ends in New Zealand.
August 19 – First ascent of Weisshorn, fifth highest summit in the Alps.
September – The first complete identified remains of Archaeopteryx are discovered in Germany.