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martyb writes:

For background on the launch, please see: Spacex - Crew Dragon Demo 2 Launch - 2020-05-27 20:33 UTC (16:33 EDT)

Here is the timeline for the upcoming SpaceX Crew Dragon Demo-2 launch slated for an instantaneous launch window of 2020-05-27 20:33 UTC (16:33 EDT):

(Note: all times are approximate)

Min/Sec	Event
T-45:00	SpaceX Launch Director verifies go for propellant load
T-42:00	Crew access arm retracts
T-37:00	Dragon's launch escape system is armed
T-35:00	RP-1 (rocket grade kerosene) loading begins
T-35:00	1st stage LOX (liquid oxygen) loading begins
T-16:00	2nd stage LOX loading begins
T-07:00	Falcon 9 begins engine chill prior to launch
T-05:00	Dragon transitions to internal power
T-01:00	Command flight to begin final prelaunch checks
T-01:00	Propellant tank pressurization to flight pressure begins
T-00:45	SpaceX Launch Director verifies go for launch
T-00:03	Engine controller commands engine ignition sequence to start
T-00:00	Falcon 9 liftoff
Min/Sec	Event
T+00:58	Max Q (moment of peak mechanical stress on the rocket)
T+02:33	1st stage main engine cutoff (MECO)
T+02:36	1st and 2nd stages separate
T+02:44	2nd stage engine starts
T+07:15	1st stage entry burn
T+08:47	2nd stage engine cutoff (SECO-1)
T+08:52	1st stage landing burn
T+09:22	1st stage landing
T+12:00	Dragon separates from 2nd stage
T+12:46	Dragon nosecone open sequence begins

Original Submission