spaceflightnow.com
2142 GMT (5:42 p.m. EDT)
Now passing the T-minus 1 hour mark in the countdown. Two scheduled holds are planned at T-minus 20 minutes and T-minus 9 minutes, leading to the target liftoff time of 7:38 p.m.
The final pre-flight alignment of Atlantis’ guidance system inertial measurement units is underway.
Weather conditions remain “go” for launch at this time. Skies have cleared over Kennedy Space Center and things look good right now.
2140 GMT (5:40 p.m. EDT)
The “go” was just given to close Atlantis’ crew module hatch for launch.
two hours to go
spaceflightnow.com
2155 GMT (5:55 p.m. EDT)
The shuttle’s crew compartment hatch is confirmed to be closed and latched for flight.
1.6 hours
I’m about 30 mins west of the Cape...from here it looks clear-ish...just noticed some clouds popping up..