The repayment date of ABC's credit card is 25th after the billing date, while your credit card billing date is 27th every month (fixed), so the repayment date is 25th after the billing date, that is, around 22nd every month (30 days is different from 3 1 day), that is:

February 28th to March 27th is a billing period. For this cycle of credit card consumption, a bill will be generated on March 27th, and April 2nd1is the final repayment date.

March 28th to April 27th is a billing cycle. For this cycle of credit card consumption, a bill will be generated on April 27th, and May 22nd is the final repayment date. And so on.

Therefore, the interest-free period is the shortest, only 25 days (credit card on March 27th, repayment on April 27th, 2 1) and the longest, 56 days (credit card on March 28th, repayment on May 22nd). Be sure to know the billing date and repayment date of your credit card so as not to miss it.