When you feel like you're running out of time...

        _____
     _.'_____`._
   .'.-'  12 `-.`.
  /,' 11      1 `.\  The Egyptians divided the day into two 12-hour periods, 
 // 10      /   2 \\   and used large obelisks to track the movement of the sun.
;;         /       ::      thus... AM and PM.
|| 9  ----O      3 ||
::                 ;;  The second was defined by the ancient Babylonians to be 1/84,600 of a day.
 \\ 8           4 //
  \`. 7       5 ,'/  
   '.`-.__6__.-'.'
    ((-._____.-))
    _))       ((_
   '--'SSt    '--'