Plex uses the date and time the media was created to calculate the timestamp for recently added, even if that date is in the future. Based on the dates that are showing, I’m guessing you have Sonarr and Radarr set to change the file’s date to the release date/air date in the
Media Management advanced settings.
You’ll want to change that setting to
None to fix media added in the future. As for fixing your existing media, you need to fix the date for those existing files first. If you’re using unraid or a Linux distro for your file storage, you can open the terminal and run the
touch command (
touch myfile.mkv) to change the timestamp on the files to update them with the current date and time. Or, if you prefer, you can also use
touch to update the timestamp to a previous date and time (
touch -t YYMMDDmmss myfile.mkv). If you use Windows, there’s nothing built-in but you can use a third-party tool like Attribute Changer to update the timestamps. Either way, once you’ve updated the timestamps on the files you want, redo the Plex dance and the files will show up with the updated dates.