There are some things that can mess with his good time, but think positively, unless there is was an incident report that took some good time back, you will be seeing him on September 7.
https://www.inmateaid.com/ask-the-inmate/my-husband-got-sentenced-4-years-and-his-good-time-suppose-to-be-september-7#answer
Accepted Answer Date Created: August 07,2016