code: function(year) {
      var self = this;
      var month = 6;
      var midsummerDay;
  
      self.range(20, 26).forEach(function(day) {
        if (!midsummerDay) {
          var date = self.createDate(year, month, day);
          var dayOfWeek = self.getDayOfWeek(date);
  
          if (dayOfWeek === self.SATURDAY) {
            midsummerDay = date;
          }
        }
      });
  
      return midsummerDay;
    }
docs: Determines the date of Midsummer Day.
  Saturday between June 20-26
  @param {number} year
  @return {Date}