The credit card billing date of CITIC Bank can only be modified once every six months, and the modification range must beNo.. 1-20 (inclusive), and shall not exceed 8 days before and after the original bookkeeping date. The revised billing date will take effect the next month, and the final repayment date will be extended with the new billing date 19 days (the rebate card will be extended by 4 days). If you need to modify, please call the customer service hotline to apply for modification.