Here’s a snippet to display only days with jQuery Countdown.
var countDownEndDate = new Date('2015-01-01T00:00:00+0900');
$('#js-countdown').countdown({
  until: countDownEndDate,
  compact: true,
  compactLabels: ['', '', '', ''],
  format: 'D'
});
This will display only the days part of the countdown.
That’s all from the Gemba.