code: public static int getMonthDay(Calendar cal) {
  		int month = cal.get(Calendar.MONTH) + 1;
  		int day = cal.get(Calendar.DAY_OF_MONTH);
  		int monthDay = month * MONTH_MULTIPLICATOR + day;
  
  		return monthDay;
  	}
docs: Returns monthDay representation defined in the EXI format (Month * 32 +
  Day)
  
  @param cal
  calendar
  @return monthDay