MinnesotaHunter
Well-known member
Anyone know why it is called dday?
D-day, H-hour, etc are a method used by the military to synchronize events for an operation where the exact execution time/date is not yet known. It is basically a benchmark. You can then use D-4 for a task that needs to be accomplished 4 days prior, or D+2 for something that needs to happen 2 days after that benchmark.