public static int daysInMonth(int month, int year) {
		switch(month) {
		case 9: // September
		case 4: // April
		case 6: // June
		case 11: // November
			return 30;
		case 2: // February
			return isLeapYear(year) ? 29 : 28;
		default:
			return 31;
		}
	}