There are also a few additional journeys between Sidari and Kassiopi only, or are least there were last year. I guess these will connect with buses from Kassiopi to Corfu Town but being Greece, maybe not
. I haven't got times for these but you should be able to pick them up from the above links. As others have said, use these as a guide until you there and then check locally as times do change and there are additional journeys from some places as the season progresses.
Most stops did seem to have up-to-date info on them when we were there in May last year and on a journey back from Corfu Town, the conductor was changing them. Hope this helps.