A History of Short Words

From the New York Times Crossword Puzzle

DDAY

Mon, 16 Sep '24
6/6/1944, familiarly
Thu, 8 Aug '24
Its 80-year anniversary was observed in June of 2024
Mon, 27 Jun '22
When the Allied invasion of Normandy was launched
Thu, 14 Apr '22
Critical time
Fri, 7 May '21
Decision-making time