At exactly 12:00, the hour, minute, and second hands are all pointing straight up.

Are there any other times that all three hands are superimposed?
If so, when?

If M and H have to be integer, you can look at all the solutions of M=59*S/60 for all integer M and see if any of the values for M and S would give an integer H. I cannot find one, so I would have to say no, there is no other time.

Posted by Jils on 2004-01-30 09:27:50