Ok Alex, I understand about advance tickets; however ...
I need timetables to be able to PLAN ahead even without ticket price and availability information.
I understood the publication of the timetable at T-12 was an obligation to the government and thereby to us.
Would you agree that the introduction of the new timetable in May 2018 was widely recognised as a 'fiasco', and it was known at T-12 that it was not going to work (due, if I recall correctly, at least in part to lack of route-trained train staff for the ambitious Thameslink changes, and the scale of change needing a lot more trained timetablers than were available).
Why is it not possible for 'someone' in the dis-integrated 'system' to tell us what is going on. It is generally recognised that the 'not knowing' (eg about late-running or cancelled train) is destructive.
I had a very anodyne response from National Rail Customer Relations saying in essence 'keep looking''.
I would much rather not be whingeing ...