What time of day would it not have been if it wasn't the day that it isn't?

Answer 1

0 hours GMT  . 

Answer 2

when the dude won't even tell you what time it is even though he has a rolex

Answer 3

Hold up. I need to consult my Time-Life "Mysteries of the Unknown" series of books from 1987. This will take some time, as I keep them in a fire-proof box and am never sure where the keys are.

Can we make a date to meet here again in two weeks?

Answer 4

Pull my finger and I'll tell you.