The due repayment date is the last repayment date of the credit card. After the bill is issued, you can repay it before 21st (inclusive).

in each bill, the closing date of recorded credit card transactions is called billing date, and the due repayment date is generally around the 18th day after the bill date (whichever is shown in the bill), and three natural days after the due repayment date is the repayment grace period.

Extended information:

Understand the date on the credit card bill

Billing sheet: In each bill, the closing date of recorded credit card transactions is called billing sheet.

repayment due date: generally around the 18th day after the bill date (whichever is shown in the bill). The repayment grace period is 3 natural days after the due repayment date, and the repayment during the grace period will not affect the credit investigation.

trading day: it is the actual date of each credit card transaction, such as the 25th consumption, and its trading day is 25th.

bookkeeping date: generally the day after the trading day. For example, the consumption on the 25th was not recorded until 26th.

billing dates of different cardholders may be different from each other. For example, if the billing date is 25th of each month, all transactions recorded in each billing period are from 26th of last month to 25th of this month, and the corresponding final repayment date is 13th of the following month. The consumption on the 25th is generally recorded on 26th, and will be included in the next bill. Transactions recorded after the billing date belong to the next bill, and transactions without bills can be queried in the online bank account management column.

China Merchants Bank official website-Answers to Credit Card Questions