Time is a concept of man, so it's rather irrelevant, but interesting.
The real question should be about those who obsess about past experiences, good or bad, and not about the here and now. It's fine to remember "the good old days" with friends, but when all someone can ever talk or think about is "that one time 25 years ago" they let life pass them by. I feel that's more worrisome than our brain being 80 milliseconds off of reality. Think about how minuscule a fraction that is.
Blessed Be D2.