Figure a minimum of 4 to 6 weeks. They go into a mail bag on the day received and are processed on a first-in, first-out basis. So how soon they are processed depends on all the returns ahead of them and the time it takes to process them. In addition, certain items in the return may further delay processing. Unless you used USPS return receipt or tracking you'll have no way of knowing if and when they are received. Even after being fully processed it's usually several days to a week later that a transcript shows up in your account. All you can do is check each day.
