Key Milestones for Today’s Psyche Launch

We’re a little over an hour away from today’s launch of NASA’s Psyche mission from Launch Complex 39A at NASA’s Kennedy Space Center in Florida.
Here’s a closer look at some of today’s important countdown and ascent milestones (all times are approximate):
Time Events
– 00:53:00 SpaceX Launch Director verifies go for propellant load
– 00:50:00 1st stage RP-1 (rocket grade kerosene) loading begins
– 00:45:00 1st stage LOX (liquid oxygen) loading begins
– 00:35:00 2nd stage RP-1 loading begins
– 00:18:30 2nd stage LOX loading begins
– 00:07:00 Falcon Heavy begins engine chill
– 00:00:59 Flight computer commanded to begin final pre-launch checks
– 00:00:45 SpaceX Launch Director verifies go for launch
– 00:00:20 Propellant tanks pressurize for flight
– 00:00:06 Engine controller commands engine ignition sequence to start
00:00:00 Falcon Heavy liftoff
00:01:09 Max Q (Moment of peak mechanical stress on the rocket)
00:02:25 Side boosters engine cutoff (BECO)
00:02:28 Side boosters separate
00:02:40 Side boosters boostback burns begin
00:03:51 Side boosters boostback burns end
00:03:55 1st stage main engine cutoff (MECO)
00:03:59 1st and 2nd stages separate
00:04:04 2nd stage engine starts (SES)
00:04:24 Fairing deployment
00:06:47 Side boosters entry burns start
00:07:04 Side boosters entry burns end
00:08:00 Side boosters landing burns start
00:08:17 Side boosters landing
00:08:26 2nd stage engine cutoff (SECO-1)
00:54:00 2nd stage engine starts (SES-2)
00:56:12 2nd stage engine cutoff (SECO-2)
01:02:24 Psyche spacecraft deploys