code: function isNthDayMatch(date, nthDayOfWeek) {
      if (nthDayOfWeek < 6) {
        if (
          date.getDate() < 8 &&
          nthDayOfWeek === 1 // First occurence has to happen in first 7 days of the month
        ) {
          return true;
        }
  
        var offset = date.getDate() % 7 ? 1 : 0; // Math is off by 1 when dayOfWeek isn't divisible by 7
        var adjustedDate = date.getDate() - (date.getDate() % 7); // find the first occurance
        var occurrence = Math.floor(adjustedDate / 7) + offset;
  
        return occurrence === nthDayOfWeek;
      }
  
      return false;
    }
docs: Helps determine if the provided date is the correct nth occurence of the
  desired day of week.
  
  @param {CronDate} date
  @param {Number} nthDayOfWeek
  @return {Boolean}
  @private