The repayment date of CITIC Credit Card is the 20th day after the billing date, while the billing date of your credit card is the 8th of each month (fixed), so the repayment date is the 20th day after the billing date, that is, the 28th of each month, that is:

March 9-April 8 is a billing cycle, and the credit card consumption in this cycle will be recorded on April 8 and repaid before April 28.

April 9-May 8 is a billing cycle, and the credit card consumption in this cycle will be recorded on May 8 and repaid before May 28. And so on.

Therefore, if the bill is swiped on the same day, the interest-free period is the shortest, only 20 days (swiping the card on April 8 and repaying it on April 28). If you swipe your card after the bill, the interest-free period is the longest, 50 days (swipe your card on April 9 and repay it on May 28). Be sure to know the billing date and repayment date of your credit card so as not to miss it.