sprocket.....
stickyb.....
I started off with a sprinkling of suggestions from you both, ended up with the right result (i.e. success), but am not sure what happened in the middle!
I operate the calendar in very simple mode, imputting direct into the 'view 31 Month' squares; have never opened an appointment window 'til now (!)
Looked at 'Fields' in 'Customise Current View' and 'start' & 'end' were in the correct place, but decided to reimput them. Although this should have been no different than before, it had an 'exciting' effect on 31 Month in that all entries suddenly stretched over two days, with funny little clock faces at both ends.
Then took a look at Appointment times, re. half hour increments, to find them all over the place (and all into the next day!). After a lot of fiddling around, managed to get back to the staus quo.
Quite what has gone on I'm not sure. It may (probably) be me, but the simple fact is that I have quite happily been operating in this mode for a number of years and all of a sudden - across the whole calendar - the appointment days/times have decided to go haywire, along with those irritating 'reminder' jingles that have never been programmed or requested (didn't bore you with that bit).
Anyway, all seems well now for the first time for a while and I again thank you both for your time and enthusiasm on this one.
BST.