You haven’t said much about your system, (well anything at all actually!)
Does the data come from the same source?
Is the processing exactly the same?
Were these accounts set up together?
From what you post it looks like something is set up quite wrong in at least one of them, the 2nd one shows 2 thirds of this years consumption occurred on that same day.
There is no where enough info here to even make a guess, so if you want to expand someone might be able to help.
PS - The title is also a little misleading as emonhub doesn’t store or display data, I assume you mean ‘local’ emoncms (on a emonPi perhaps) differs from another ‘remote’ instance of emoncms