Iterate on second

I've been trying to make a loop that will only repeat when a second has passed.  Basically it will check every second to see if the current time is equal to a specified time.  At the moment my program just repeats the same number about a thousand times before  it reaches the next one...any halp guyz?

BETTER USE 64BIT INTS FOR TIME OR YOUR COMPUTER MIGHT EXPLODE IN THE YEAR 3000