For monthly memberships, your first payment occurs on the day you join the Academy. You will be charged on that same day every month thereafter.
For example, if you joined the Academy on July 8th, every monthly payment after that will be due on the 8th (August 8th, September 8th, and so on).
For annual memberships, the credit card on file will be billed on the day you join the Academy and every year thereafter.
See this article for instructions on how to pause or cancel your membership.