$( document ).ready(function() {
       var twoDaysFromNow = new Date().valueOf() + 2 * 24 * 60 * 60 * 1000;
    $('#countdown').countdown(twoDaysFromNow, function(event) {
      var totalHours = event.offset.totalDays * 24 + event.offset.hours;
      $(this).html(event.strftime(totalHours + ':%M:%S'));
    });
  });