The in game fleet calendar is weak at best. I could make a better calendar!
Our fleet has dead events from former members and I just lost an event because I went in to modify the text of the event but when you click edit it "tools" around with the dates so when you click "ok" it "cancels" the event and reshedules a new event. This behaviour is almost never desired!
So there ended up with three "copies" of the event, two cancelled, one current. So I figure I might as well clear the now cancelled event entries... they are just dead information. So I hit remove on one of them and blam all the three events disapear (even though they all reported different times and varied texts).
Please PLEASE put some thought into the fleet calendar. Its not used too much as it is, but for the times its needed the bugs make me just post the events to the web.
(to say something nice, glad to see they have clearly advertised the Reman reward as limited and how long it will be available)