Aye, it would be great if we had a timer available for it. Maybe not on the main map (though that would work too), but if when you click on the exhausted adventure there would be a countdown timer for when that adventure will be available again, that would be quite helpful. Unless, of course, they all refresh at a specific hour of the day (midnight GMT, or something like that), then we just need it stated somewhere.
I'll check that tonight. I was playing way past midnight GMT this morning and I didn't look for the refresh. I did get messages from Admin Jon about server bounce at 30 minutes and 10 minutes, though.