Generally, it will be displayed in the bill. If the bill has been issued, please log in to the credit card website, click "Online Banking Login" on the right, and after logging in, click "Account Management" - "Expired" in the horizontal menu above "Bill Inquiry", please click on the blue font "Bill Details" corresponding to the billing month. If the bill has not been issued, you can click "Account Management" - "Inquiry of Unissued Bills", and please check the "Transaction Date", "Accounting Date", "Transaction Summary", and "Last Four Digits of Card Number".