It is well known that a stopped clock gives the exact time twice a day, while a clock that gains or loses time may not be right more than once over a period of months.

My clever father adjusted his clock to give the correct time at least twice a day, while running at the normal rate.

Assuming he was not able to set it perfectly (a reasonable assumption) how did he do it?

(In reply to Possible solution? by Tiralmo)

Tiralmo, you are entirely too humble. That is indeed the solution. The man set the clock to run backwards.

Posted by Stephen on 2006-03-06 21:41:33