How do I take a snapshot of a countdown timer

Hi Hope someone can help me,

I have a countdown timer which starts at 60 seconds and finishes at 0, game over. I need to capture the very second that the player has successfully completed the task. E.g You did it in 37 seconds. Which does sound simple but I am puzzled at the moment as how to go about it. Any suggestions would help.

Thanks John

Stop the timer?

So simple!!! thanks

LittleStain