If you fly around by Wildhammer Stronghold in SMV you will get the prompt that dailies have been reset. This generally happens in 5 minute increments. I have been able to confirm x:00 and x:25 so far. This is especially useful atm for grabbing 25 quick JC tokens.
Have fun!
Edit: Confirmed x:10
Edit2: Confirmed for Horde only.
Edit3: SS's
This is the first turn in (Time Stamps are my only proof pretty much)
This is the reset
Voila, reavailable quest.