The billing date of each bank's credit card is fixed, but if your three credit cards are not from the same bank, then the billing date is based on each bank.

You can also modify the billing date. The bank stipulates that the bill date can only be revised once a year. After the successful revision, it will generally take effect from next month.

In the setting of billing date and repayment date, it is suggested that cardholders set the repayment date a few days after the salary arrives, so that they can have sufficient funds to repay the current bill. In order to avoid paying unnecessary fees because of overdue.