When exactly is the chain split? Do I need to transfer coins today or can I do tomorrow?
Are you a troll??

And yes dumbass.. you need to take what is yours out of the exchange. Because I'm not sure what exchange you are on and what politics they will have about giving you back the other coin, BCC I think its called, in case you want to profit from both. So yes, take them out, then you wait to see how you split them. But basically my understanding is the account that has any kind of bitcoins in it after the chain split will have the BCC as well, so after that period if you move any BTC and the balance show you 0,0000 and you moved lets say 5,25525000 out of it. Then those 0,000.. have a hidden chain in them that the software doesn't recognize. So basically with the same address you use to move those 'invisible' BCC's after you move the BTC.
