To elaborate on my previous post, profs can't change course times. If the registrar says the class is at 11:30, it's at 11:30, no if, ands or buts. Since 3RW3 is at 8:30, and he's teaching both classes, it is highly likely he just got the two times mixed up.
Contact him, or the geo department if he doesn't get back to you (it happens), to double check though.