I'm looking foward to finding out more about this myself, so I'm going to keep watching this thread. I know probably about as much as has been said right now, and I'd like to find out more. I expect someone like Darth Chaltab will be able to explain it more clearly than anyone else.

In the meantime, though, I have to ask: What exactly are you worried about? If you actually have specific dates as to when certain ages begin and end, why worry you'll miss the transition? Just keep an eye on the dates of the comics you happen to be reading and then you'll most likely know when to start your clean slate or at least be aware that things might be different.