gistfile1.txt

    $scope.$watch('[min, max]', function (vals) {
      var min = vals[0], max = vals[1], date = $scope.date;

      var start = moment(date),
        end = moment(date);

      start.hour(min/60);
      start.minute(min % 60);

      end.hour(max/60);
      end.minute(max % 60);

      $scope.selectedRange = moment().range(start, end);
    });