Answer: bicentennial

AnswerCrossword Clue
BICENTENNIAL7-4-1976 celebration
BICENTENNIALLong-delayed celebration.
BICENTENNIAL1976
BICENTENNIAL1976, e.g.
bicentennialThe two-hundredth anniversary of a significant event
bicentennialhappening every two hundred years / a two hundred year anniversary also BICENTENARY