The Inauguration entry from the Online Etymology Dictionary:
1569, from Fr. inauguration “installation, consecration,” from L. inaugurationem (nom. inauguratio) “consecration, installment under good omens,” from inaugurare “take omens from the flight of birds, consecrate or install when such omens are favorable,” from in- “on, in” + augurare “to act as an augur, predict” (see augur).
Maybe January 20th will bring a good change, a more positive era–and mark the end of an error.