It's not his timepiece that is different, it's his point of view. Our timepiece is the one out of sync when it comes to viewing the past. And it's because there is much we do not and likely cannot ever know. Scientists are like latecomers to the OJ case. When all they have is a picture of Mark Fuhrman and a few facts about the murder, they conclude Fuhrman must have done it - just look at the evidence....
They get scraps of metal shavings and want to make a skyscraper of it - thinking themselves intelligent and wise.
A second to God is like a lifetime to us mortals.