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English, like most languages, has two main metaphors for talking about time. There's one where events are static objects that we move past ("We're almost to Halloween", "We passed the deadline"), and one where we're static and events move past us ("Halloween is almost here", "The deadline went zooming by"). The weird thing about "moved forward" is that it's perfectly ambiguous between these two metaphors -- it could mean we moved the meeting in our direction of travel, i.e. future-ward, or that we moved it further in *its* direction of travel, i.e. past-ward.

If you go up to random English speakers and say "The meeting was on Wednesday, but it got moved forward two days; when is it now?", then
1) ~50% will say Monday, ~50% will say Friday
2) Many people will be very certain of their interpretation, and claim that anyone who gave the other answer is some sort of dork who doesn't speak English
3) If you ask them again later, after they've forgotten about this, then they may well give the other answer.

The answers you get also depend on whether people are moving when you ask the question: http://www-psych.stanford.edu/~lera/papers/mindbody.pdf

Also, the OED defines "hence" as "From this time onward...(At some time in the future) from now".

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