EDIT: As in the questions title, is it semantically correct to use sentences such as "the concert was moved ahead in time as the stage was no longer available". To me, this makes sense, but is ambiguous in meaning - was the concert moved backwards or forwards?
Assuming this does make semantic sense: is there a way to remove the ambiguity and imply that the concert was delayed whilst maintaining the usage of the word ahead?
I've re-worded this entire question (thanks to deadrats comment).
Original question: Is it grammatically correct to use the sentence "I travelled ahead in time"? If so, what would the meaning/interpretation be?
Based on the assumption that this is a valid sentence, is it then also valid to say "the concert was moved ahead in time"? Again, what would the interpretation of this sentence be, or is it ambiguous?