My being in the US I am used to seeing mm-dd-yyyy
But because I’m familiar with code, I actually prefer yyyy-mm-dd
Using that format on a dev forum has not caused any misunderstanding that I know of, but that is likely due to it being a dev forum more than it’s being easily recognizable.
In any case, might it be better to have the format come from a translation file (if possible) instead of removing it entirely?