GTFS static - matching trip_id to a specific date

Hi all,

Apologies if this is straight forward and it’s just going over my head.

I am trying to match specific trip_ids for trains to a day of operation. I know that the schedules file shows the days a service will run, but what I am trying to do is be able to assign each specific trip (from trips.txt) to a date/planned date of operation.

I’ve scoured the web and just cannot seem to work this out. One of the mods wrote here that trip_id is in this format:
[run number].[start date of trip validity].[days of operation for timetable].[consist type].[number of cars].[time for start of trip]

Which would work well, but what I have is something more like this, which does not include a date:

Any help would be appreciated!