Is the way this piece presents, e.g., "D-Day -21" and "D-Day +2" historically ac...

		mbauman on June 5, 2019 \| parent \| context \| favorite \| on: The Forecaster: The Man Who Decided D-Day Is the way this piece presents, e.g., "D-Day -21" and "D-Day +2" historically accurate? I had always thought it was D-21 and D+2, explaining D-Day as being the D±0.