code: function (hour) {
        if (this.settings.hour === 12) {
          switch (hour) {
            case 0:
            case 24:
              hour = '12am';
              break;
            case 12:
              hour = '12pm';
              break;
            default:
              if (hour > 12) {
                hour = (hour - 12) + 'pm';
              } else {
                hour += 'am';
              }
          }
        } else {
          if (hour >= 24) {
            hour = 0;
          }
  
          if (hour < 10) {
            hour = '0' + hour;
          }
          hour += ':00';
        }
  
        return hour;
      }
docs: Return a hour to readable format (Grid structure)
  @param hour
  @returns {string}