Bluetracker
Tracks Blizzard employees across various accounts.
How many hours until PTR is live?
Checking the PTR notes only says February 6 but as far as I know there were no time zones or anything too precise. Do we know exactly when it will be live?
Nevalistis
No, and that's on purpose. PTRs can, and often are, more unstable than truly live builds, so we don't commit to a time because anything can (and often does) go wrong.
We do operate on a Pacific Standard Time schedule, since we're located in Southern California, so you can pretty much assume launch will happen sometime during our business hours in that time zone. :)