         x:
           type: 'timeseries'
           tick:
-            format: '%Y-%m-%d'
+            format: '%m/%d'
       grid:
         y:
           lines: [{value: 10000, text: 'Daily Goal'}]

    $scope.sleepChartConfig =
      data:
        x: 'dateTime'
        json: []
        keys:
          x: 'dateTime'

        x:
          type: 'timeseries'
          tick:
            format: '%m/%d'
      grid:
        y:
          lines: [{value: 420, text: 'Daily Goal'}]
