If your PC dies in a thread on the 28th, and you've already started a thread on the 60th of the same season, that 60th thread becomes 'null' and it either has to be deleted or your posts have to be altered... meaning you are now a ghost or you selectively take out your PC's participation in them and let the other players rewrite.
Fortunately this doesn't happen often.
Mostly, look at people's thread lists in their CS's. Here's my PC's CS and note at the bottom where the thread list is, there's a Season date.. then I start a list of threads I have going on in that season in order .... etc.
http://www.mizahar.com/forums/topic666.html