OK, so no season/episode info to differentiate.
Yes, agreed. This is worth reporting here to get Plex to recognise this as a date based show.
This is the Plex info on date-based naming:
Date-Based Television Shows
TV Shows that are date-based should be named as follows:
- /TV Shows/ShowName/Season 02/ShowName – 2011-11-15 – Optional_Info.ext
- /TV Shows/ShowName/Season 02/ShowName – 15-11-2011 – Optional_Info.ext
Where you specify the appropriate date. The date can use either the YYYY-MM-DD or DD-MM-YYYY formats and can use different separators:
- Dashes (2011-11-15)
- Periods (2011.11.15)
- Spaces (2011 11 15)
[edit: Typo]