CALAMITY, n. A more than commonly plain and unmistakable reminder that the affairs of this life are not of our own ordering. Calamities are of two kinds: misfortune to ourselves, and good fortune to others.
Source: The Devil's Dictionary, 1911.
-- Ambrose Bierce, (Jun 24 1842-1914), US journalist, short-story writer; He was a noted wit, satirist and sardonic short story writer who disappeared while covering the Mexican revolution.