H0	Main Engine Ignition
The Ariane 5 rocket's first stage Vulcain 2 main engine ignites and undergoes a thorough health check on the launch pad.
H0+00:07.3	Launch
Producing about 2.6 million pounds of thrust, the Ariane 5 rocket's two solid rocket boosters ignite to lift the launcher into the sky.
H0+00:12.7	Start Pitch Maneuver
The Ariane 5 rocket begins to pitch over after rising vertically from the ELA-3 launch pad.
H0+00:17.1	Start Roll Maneuver
The Ariane 5 rocket starts its roll maneuver to head east away from the Guiana Space Center.
H0+00:50.2	Mach 1
At an altitude of 6,900 meters, or about 22,600 feet, the Ariane 5 launcher passes the speed of sound.
H0+02:23	Booster Separation
The solid rocket boosters exhaust their propellant and are jettisoned from the Ariane 5's first stage.
H0+03:24	Jettison Payload Fairing
The two halves of the Ariane 5's 5.4-meter, or 17.7-foot, diameter payload fairing are jettisoned once the rocket leaves the thick lower atmosphere.
H0+09:00	Main Stage Shutdown
The cryogenic first stage's Vulcain 2 main engine shuts down.
H0+09:06	Stage Separation
Explosive bolts fire to separate the Ariane 5's first and second stages.
H0+09:10	Upper Stage Ignition
The upper stage's HM7B engine, burning liquid hydrogen and liquid oxygen, ignites to propel the Skynet 5D and Mexsat Bicentenario satellites to orbit.
H0+25:07	Upper Stage Shutdown 1
The upper stage's HM7B engine shuts down after reaching an orbit with a low point of 155 miles, a high point of 22,355 miles and an inclination of 2 degrees.
H0+27:06	Skynet 5D Separation
The Ariane 5 rocket deploys the Skynet 5D communications satellite for Astrium Services and the UK Ministry of Defence.
H0+34:37	Sylda 5 Separation
The Sylda 5 dual-payload adapter is jettisoned to expose the Mexsat Bicencenario satellite for separation.
H0+36:11	Mexsat Bicencenario Separation
The Ariane 5 rocket deploys the Mexsat Bicentenario satellite for the Mexican government.

Data source: Arianespace/Astrium