Billing Date/Cycle: This refers to the period during which all transactions on your credit card are billed. It typically lasts for a month, after which a statement is generated summarizing all transactions.Due Date: This is the date by which you need to pay at least the minimum amount due to avoid penalties and interest.Changing these dates may be possible depending on HSBC Bank's policies. Contact customer service to inquire about the possibility and process of changing billing or due dates.