A photo of an earlier SpaceX rocket launch taken by Valley resident Mary Lynch McInnis. When will the next SpaceX launch happen? As of Tuesday morning, the next SpaceX launch that we may be able to see in Arizona currently has a projected launch time of 7 p.m. on Aug. 11. The Falcon 9 rocket will launch from Space Launch Complex 4E at Vandenberg Space Force Base in Santa Barbara County, California. The Falcon 9 rocket is a $69.75 million rocket primarily used to deliver satellites to space.