Prepone

Is my favorite Indian English word. Ok -- so it isn't an official word in most dictionaries -- but it's used heavily here to mean that you moved something ahead of schedule -- so the opposite of postpone -- makes sense, eh?

http://bprakash.blogspot.com/2005/05/preponed.html

http://www.languagehat.com/archives/000645.php

http://www.hindu.com/edu/2004/05/31/stories/2004053100661504.htm