If you aren't too sure when your hosting is due for renewal there is a quick way to double check.

Log in to the client area, and then from here, select My Products and Services.

When you select this, you will see a list of all the packages that you may have with us. Within the list, you will see the Price you pay, the Billing Cycle you have selected (Monthly or perhaps Annually) and also the Next Due Date which will show the payment due date for your next invoice to renew your hosting.