What does post date mean?

Pertaining to the terminology used in the field of credit card business, a post date signals the date which becomes visible on the issuing banking institution’s records; the date of a specific purchase/transaction you have made using the credit card. Post date may, or may not coincide with your actual transaction date; this is why if you closely check the credit card statement, there will be a separate tab displayed for “trans date” (actual transaction date), and “post date” (the date your transaction reached the records of the issuing bank), and there you can track these dates.