I think they come available at 8 AM PST, but not sure. (Maybe Frank remembers?)
Steve C 1-24-16: "Paul, it's 10 AM ET, 7:00 PST.
Practicing how to minimize mouse movements to reduce the amount of time it takes to move-click-move-click.
Alternative is to book a trip from Kearsarge to Horseshoe Meadows, then hope for walk-in exit permits."