Just a mixed DM
Notice #1:
If you DO NOT see anything in cell "B2" (aka cell below clock, the cell which should show the timer,
- You are probably using Google Crome browser. Yes its great but don't use it to show this page please ;)
- The timer has finished... really? 0.o
Notice #2:
If you notice that seconds are changing at different moments, 
its because of timer checks time from server which is located in US (As far as I know) 
and because of the Clock checks time from your PC.