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Atlas/Landsat launch timeline
Posted: January 15, 2013

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T-0:00:02.7 Engine Start
The Russian-designed RD-180 main engine is ignited and undergoes checkout prior to launch.
T+0:00:01.1 Liftoff
The Atlas 5 vehicle, designated AV-035, lifts off and begins a vertical rise away from Space Launch Complex 3 at Vandenberg Air Force Base, California.
T+0:01:27 MaxQ
The rocket passes through the area of maximum aerodynamic pressure as it accelerates through the lower atmosphere.
T+0:04:02 Main Engine Cutoff
The RD-180 main engine completes its firing after consuming its kerosene and liquid oxygen fuel supply in the Atlas first stage.
T+0:04:08 Stage Separation
The Common Core Booster first stage of the Atlas 5 rocket separates from the Centaur upper stage. Over the next few seconds, the Centaur engine liquid hydrogen and liquid oxygen systems are readied for ignition.
T+0:04:18 Centaur Ignition 1
The Centaur RL10 engine ignites for the longer of the two upper stage firings. This burn will inject the Centaur stage and TDRS spacecraft into a parking orbit.
T+0:04:26 Nose Cone Jettison
The payload fairing that protected the TDRS K spacecraft during the climb through the atmosphere is no longer needed and is separated.
T+0:15:23 Centaur Cutoff 1
The Centaur engine shuts down after arriving in a planned parking orbit. The vehicle enters a lengthy coast period lasting nearly 55 minutes before arriving at the required location in space for the second burn.
T+1:10:34 Centaur Ignition 2
The Centaur re-ignites to propel the payload into the desired Sun-synchronous polar orbit from the parking achieved earlier in the launch sequence.
T+1:12:20 Centaur Cutoff 2
At the conclusion of its second firing, the Centaur will have delivered the Landsat spacecraft into the targeted orbit with an apogee of 421 statute miles, perigee of 410 statute miles and inclination of 98.2 degrees.
T+1:18:21 Spacecraft Separation
The Landsat Data Continuity Mission spacecraft in collaboration between NASA and the U.S. Geological Survey is released into orbit from the Centaur upper stage to complete the AV-035 launch.

Data source: United Launch Alliance.