I sort of refer to this thread here.
But the suggestion is to add a paragraph at the top of it containing a short/easy-to-find list of next-available-dates for the types of events that don't happen on a casual basis or a set schedule, like ToH and the Fairy Auction. That way if anybody has any question about when it is they can just check that specific thread (bookmark it, even) and there'll be a full list of whatever is upcoming in the near future. It would look something like this:
heRO Scheduled Events
Current Server Events: Pandelina,
December A through
December B
December ToH:
X Date
December Fairy Auction:
Y Date
There may be more to list that I can't think of at this time... but it would be a good way to stay informed for lazybums like me who don't have the time to haunt the forums often enough to sift through each thread and find out the event they were curious about attending happened last week??:S
Let me know if I'm being a moron and missed something obvious that already answers this kinda thing x.X