2460: How D-Day was almost Stopped by a Crossword Sep 6, 2021

D-Day was one of the most significant days of the 20th century, and yet it was all almost stopped due to a crossword puzzle. In the days leading up to the originally chosen date, the The Daily Telegraph had answers across multiple crosswords that included on one 'Utah', 'Omaha', then 'Mulberry', 'Overlord', and finally 'Neptune': all names of landing sites chosen in the beaches of Normandy, or names for operations (e.g. Operation Overlord). After an investigation by MI5, this was determined to be a coincidence.

2455: H-Hour & D-Day Sep 1, 2021

H-Hour refers to the time of day which a battle was set to commence, with this phrase entering the military parlance of the First World War. The 'H-' stands for 'hour' in effect, but the Norwegian calque 'klokken H' only took the letter and not the pattern. This pattern was also used for D-Day, which now refers to a specific moment in history—June 6, 1944—but just referred to the planned, secretive date of the Normandy landings.