Los Angeles, United States - November 17, 2025 11/16/2025 09:24 pm GMT-0800 SIMI VALLEY, Calif. – Info via SpaceX: SpaceX is targeting Sunday, November 16, for launch of NASA’s Sentinel-6B mission from Space Launch Complex 4 East (SLC-4E) at Vandenberg Space Force Base in California. Liftoff is targeted for 9:21 p.m. PT. If needed, a backup opportunity is available on Monday, November 17 at 9:08 p.m. PT. This will be the third flight for the first stage booster supporting this mission, which previously supported two Starlink missions. Following stage separation, the first stage will land on Landing Zone 4 (LZ-4) at Vandenberg Space Force Base. Sentinel-6B will use radar to bounce signals off of the ocean surface to deliver continuous ocean topography measurements. The mission also will collect high-resolution vertical profiles of temperature to assess temperature changes in Earth’s atmosphere and improve weather prediction models. It will take over from Sentinel-6 Michael Freilich, a twin of Sentinel-6B, which Falcon 9 launched five years ago on November 21, 2020 There is the possibility that residents of Santa Barbara, San Luis Obispo, and Ventura counties may hear one or more sonic booms during the launch, but what residents experience will depend on weather and other conditions. NOTE: Video shot from Simi Valley, CA