[SpaceX Starship Attempts First Orbital Launch Today, Launch Window Opens at 8:15 ET] Deep Tide TechFlow reports that on September 28, according to CNBC, SpaceX plans to open a 75-minute launch window at 8:15 AM Eastern Time today (September 28) to launch its large Starship rocket from Starbase in Texas. This will be the rocket's first attempt to reach orbit. Starship is central to SpaceX's expansion plans, with the company hoping it will drive the scaled growth of its Starlink business—currently SpaceX's largest and only profitable business segment.