China Construction Bank's credit card billing date is usually set on the 27th of each month, and the repayment date is the 2th day after the billing date. This means that if your billing date is 27th, then the repayment date will fall on the date after 2 days. Because the number of days in each month is different, there may be 2 days or less, or more than 2 days. In case of a month with 3 days or 31 days, the repayment date will be postponed accordingly. For example, the 2 days after September 27th will be around October 16th, so the consumption from September 28th to October 27th should be repaid before November 16th. For the consumption from October 28th to November 27th, the bill will be generated on November 27th, so it needs to be repaid before December 17th. It should be noted that consumption on the day of billing enjoys the shortest interest-free period, that is, 2 days (for example, consumption on October 27th should be repaid on November 16th), while consumption after billing enjoys the longest interest-free period, which can reach 5 days (for example, consumption on October 28th should be repaid on December 17th). Therefore, it is very important to understand the relationship between billing date and repayment date for rational planning of repayment plan.