Okay, this has always confused me. If the date or time for something has been changed, say that originally something was supposed to happen on July 1st 2012 but now it is happening on October 1st 2012, do you say that the event has been "pushed back" or "moved forward"?
"Forward" seems wrong because "forward" implies "closer" (to me) rather than later, but on the calendar, "forward" could also mean moving the event ahead in time so that would be the correct term to use.
"Back" could mean moving the date backward, so that would be wrong but "back" sort also means further away, so the date is further away, therefore that is the correct term.
For some reason this distinction has always confused me.