http://www.newsweek.com/how-watch-spacex-sentinel-6-launch-1549206

SpaceX will launch its Sentinel-6 ocean-mapping satellite on Saturday. The satellite will be deployed on a five-year mission to map rising sea levels associated with global warming.

The launch is scheduled to take place from Vandenberg Air Force Base in California at 12:17 p.m. EST (9:17 a.m. PST). It will be launched on board a SpaceX Falcon 9 rocket.