The Crew Dragon mission was delayed a day due to cumulus clouds, but had enough clearance to allow for a launch on August 1. The Falcon 9 rocket lifted off from Launch Complex 39A at 11:43 a.m. EDT (1543 UTC).
The rescheduled test came a day after a launch day rehearsal with the Crew-11 astronauts and cosmonaut in the loop, referred to as a dry dress rehearsal. The Crew-11 launch is currently scheduled for Thursday, July 31 at 12:09 p.m. EDT (1609 UTC).