code: function(issuedDate, startDay, startTime, index){
        var offset = Math.floor((startTime + index)/this.times.length);
        return moment().add(offset, 'days').format("Do MMM YY");
      }
docs: /*
  PUBLIC
  Helper method that uses the Moment API to get the day of
  the current forecast cell.
  issuedDate: The date when the forecast was issued.
  startDay: The first day in the snow forecast.
  startTime: The first time in the snow forecast.
  index: Current index, ranges from 0 to MAX_INDEX_CNT(17).
  
  returns: day: string object e.g. 8th Sep 2015