you probably mean La Fête des Rois - the Feast of the Kings - January 6, Epiphany or Twelfth Night, the commemoration of the visit of the Wise men (not 3, not Kings) in Matthew's Gospel.
Spelled "fait accompli", French for "accomplished fact"-- presumably irreversible. Also a "done deal." The January 2010 election of a Senate Republican committed to voting against the health care...