02:55 a.m. - burglar enters a house.
02:57 a.m.- police gets an alarm call.
19 minutes later the burglar is caught.
Policeman: You have been identified at 02:56 a.m. burg....
Burglar [interruping]: Impossible.
Burglar [showing his watch]: It's 02:16 a.m.
Policeman (if clever): Well, rather I'd say we caught a thief 39 minutes before he committed his crime.
- - -
Clocked back? :)
Have a nice winter-time.