You ever notice how in Back to the Future, Doc types in December 25th, 0000 to witness the birth of Christ. Three things about that. One, it travels through time, not space. They'd still be in California, completely incapable of getting to Israel, and likely underwater or something. Two, it's not the day Christ was born. Three, there was no year 0. Entering a date which doesn't exist would send him to some sort of limbo from which he would never return.
Doc is an idiot.