Where can I buy an iphone 5c on launch?

I was going to get one online but I was wondering if there's anywhere that I can buy one in a store that won't be out also if so what times are the stores open and will have them.

Most major stores
-At&t
-Verizon
-Sprint
T-mobile
-Best Buy
etc.
its open usual business hours if your not sure check on your carriers website or look at the sign on the front of the door