2 Peter 3:8 is the writer trying to cover his rear and explain why the lord is late in coming (2 Peter 3:4 for the bible thumpers out there). It has nothing to do with some magical time-frame shift of reference. I've heard better excuses from my coworkers why assignments are late. I can't wait for one of them to come up to me and say "Oh, it's due today? But one day is as three for me..."

Once again, scripture taken completely out of context. It's actually kinda funny, the whole 2 Peter 3 section, because here's the writer is put on the spot with the question "Ok, so when is this last days stuff supposed to happen and when exactly is the lord coming, because you've been saying "soon" for way too long..." and it's a huge cover his rear speech followed by doom and gloom for non-believers; the same thing you'd hear a bum wearing a cardboard "end of the world is neigh" billboard, screaming at passerby's on the streets of Manhattan.