So I guess I hit something wrong trying to record the 5 Hunter's Vale trips from this morning, since I suddenly have 4,294,967,295 valor recorded.
I'm not sure what broke; I put in the events, removed them when I realized the times were wrong, and when I accidentally hit the save button without changing the info, the whole date/target section disappeared. When I reloaded and put the events in again, the huge number caught my eye.
Serves me right for trying to do new things at 6am. Ugh, sleep.