code: function () {
        for (var i = 0, len = values.length; i < len; i++) {
          values[i] = values[i].getTime();
        }
  
        add('fd');
        return this;
      }
docs: Full date period, denotes a full date and time.
  Minimum value is Jan 1, 1970, maximum value is Jan 1, 2100 (arbitrary)
  
  recur().on(new Date(2013, 3, 2, 10, 30, 0)).fullDate();
  
  @api public