There are 2 reflectors on the well known groups.io server. Joining is free, and I've yet to get any spam out of this...
https://groups.io/g/WOR
The World of Radio reflector. When there are schedule changes, chances are you'll see it here first. If anything comes out from the old Soviet bloc, you'll hear about it here. Strangely it's been pretty quiet on that front....but who knows if that will change if the Russians start to invade?
Combined shortwave broadcast schedules.
groups.io
This reflector produces a huge list - sometimes updated more than once a day - combining numerous sources, including EiBi, HFCC, Aoki and more. It comes in an Excel spreadsheet, and there's also a file that can be used by a few SDR applications as input.
Mike