private static String[][] fillCal(String[][] cal, int numOfDays, int firstDay){
		int days = 1;
		for(int i = 1;i < cal.length;i++){
			//If in the first row of numbers, begin at first day
			if(i == 1){
				for(int n = firstDay;n < cal[0].length;n++){
					cal[i][n] = Integer.toString(days);
					days++;
				}
			}
			//Otherwise begin at first position, making sure not to put numbers above the number of days in the month
			else{
				for(int n = 0;n < cal[0].length && days <= numOfDays;n++){
					cal[i][n] = Integer.toString(days);
					days++;
				}
			}
		}
		return cal;
	}