What time is SpaceX's Starship V3 launch on May 21? (Starship Flight 12 timeline)

SpaceX will launch its first Starship V3 vehicle on the Flight 12 test flight on Thursday (May 21). Here's when it will fly.

SpaceX will launch its first Starship V3 vehicle on the Flight 12 test flight on Thursday (May 21).

Launch vehicle referenced in the source set: Starship. What time is SpaceX's Starship V3 launch on May 21? (Starship Flight 12 timeline).