January 31st (1862) was a Friday. It's the 30th day of the year (31st in leap years) in the Gregorian calendar. There are 335 days left to the end of the year.
Historical Events for 31st January, 1862
» Alvan Graham Clark discovers the white dwarf star Sirius B, a companion of Sirius, through an convert 18.5 in cm adj=on telescope now located at Northwestern University.