Fait mathématique: 5863 is the starting location of 7777 in the decimal expansion of p.
Culture générale: 5863 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: January 19th is the day in 1996 that the barge North Cape oil spill occurs as an engine fire forces the tugboat Scandia ashore on Moonstone Beach in South Kingstown, Rhode Island.