Time to act (1-3)
'time to act' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for d-day that I've seen before include "Allied landings date" , "June six, nineteen fourty-four" , "Tricky landings" , "Invasion of Europe start" , "6.6.44" .)
'time to act' is the definition.
(I've seen this in another clue)
This is all the clue.
(Another definition for dday that I've seen is " critical time for action".)