In the credit card expiration date field, if the user enters a digit 2 through 9, it should assume it's a one-digit month and move to the year field. For example, I just paid a bill, and my credit card's expiration date is 5/24. When I tried to enter that, it tried to interpret the month as 52, and it took me a couple of tries to figure out what it was erroring out. If it had figured out that if the first digit entered in that field was a 5, it meant month 5, it would have been more efficient.