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Wrong... It means Dooms Day

nah, it's just a military code for the start of an operation - "Day-1" basically. doomsday's a cool spin though, fits the drama

In French, the English term "D-Day" is translated as "J-Jour"

that's interesting - didn't know the French version had its own twist like that

The event took place in France, so that's how it was referred to in French-language publications and other media. It would have been done for all other languages.

yeah makes sense - adapting terms for local languages keeps things clear for everyone involved