If the information your inmate has in writing what the release date is, THAT is the release date. Forget what is on the Internet. Not all of the available inmate searches online are timely or accurate. Rely on the paperwork.
https://www.inmateaid.com/ask-the-inmate/after-paperwork-was-signed-and-inmate-has-been-processing-out-for-last-45-days-do#answer
Accepted Answer Date Created: August 22,2016