Falcon 9 Block 5 | Transporter 18 (Dedicated SSO Rideshare)

Timeline

Times are relative to liftoff (T 0:00) and follow the current launch time.

1. T−38:0038 minutes before liftoff: GO for Prop Load Launch director verifies go for propellant load
2. T−35:0035 minutes before liftoff: Prop Load Start of propelland loading
3. T−35:0035 minutes before liftoff: Stage 1 LOX Load Start of liquid oxygen loading in the first stage
4. T−16:0016 minutes before liftoff: Stage 2 LOX Load Start of liquid oxygen loading in the second stage
5. T−7:007 minutes before liftoff: Engine Chill Start of engine chilling
6. T−1:001 minute before liftoff: Startup The onboard computer takes control over the countdown and runs last checks
7. T−1:001 minute before liftoff: Tank Press Fuel tanks are pressurized to flight levels
8. T−0:4545 seconds before liftoff: GO for Launch Launch director verifies go for launch
9. T−0:033 seconds before liftoff: Ignition Start of the engine ignition sequence
10. T 0:00at liftoff: Liftoff First upwards movement of the rocket
11. T+1:041 minute 4 seconds after liftoff: Max-Q Maximum dynamic pressure
12. T+2:142 minutes 14 seconds after liftoff: MECO Cut-off of the main engine
13. T+2:182 minutes 18 seconds after liftoff: Stage 2 Separation Separation of the second stage from the first
14. T+2:262 minutes 26 seconds after liftoff: SES-1 First start of the second engine
15. T+2:312 minutes 31 seconds after liftoff: Booster Boostback Burn Startup Start of the booster boostback burn
16. T+2:562 minutes 56 seconds after liftoff: Fairing Separation Separation of the payload fairing
17. T+3:253 minutes 25 seconds after liftoff: Booster Boostback Burn Shutdown End of the booster boostback burn
18. T+6:096 minutes 9 seconds after liftoff: Entry Burn Startup Start of the atmospheric entry burn
19. T+6:196 minutes 19 seconds after liftoff: Entry Burn Shutdown End of the atmospheric entry burn
20. T+7:147 minutes 14 seconds after liftoff: Stage 1 Landing Burn Start of the first stage landing burn
21. T+7:327 minutes 32 seconds after liftoff: Stage 1 Landing Landing of the first stage
22. T+8:248 minutes 24 seconds after liftoff: SECO-1 First cut-off of the second engine
23. T+50:5650 minutes 56 seconds after liftoff: SES-2 Second start of the second engine
24. T+51:0051 minutes after liftoff: SECO-2 Second cut-off of the second engine
25. T+54:2454 minutes 24 seconds after liftoff: Payload Deployment Sequence Start Start of the payload deployment sequence
26. T+1:05:171 hour 5 minutes 17 seconds after liftoff: Payload Deployment Sequence End End of the payload deployment sequence.