Hmm, good question. Could it be that your computer's clock is 2 minutes fast? Does the time at http://time.gov match your system clock?
If your system clock is accurate then my next guess is that you saw the countdown run out but only after you clicked submit on your message here (at 5:58). That's a known minor bug that the countdown doesn't automatically update when new data comes in (unless you enter it in that browser). So that's why a refresh is needed to confirm the derailment.
PS: Wait, if you're really sure you hit submit on your post after seeing the countdown run out then either your system clock was off or something super weird is going on that we need to figure out. Thanks for the debugging help!