SpaceX is set to launch its Falcon 9 rocket on Thursday night, targeting liftoff at 11:49 p.m. from Vandenberg Space Force Base. The NROL-57 mission marks the company’s third launch from the base this month and ninth overall this year. A successful landing of the first-stage booster will create a sonic boom audible in the area. If the launch doesn’t occur, an alternative opportunity is available Friday at 11:31 p.m.
Source: https://www.ksby.com/news/local-news/spacex-plans-third-launch-from-vandenberg-this-month-sonic-boom-expected