While neither company has released details, an advisory by the Federal Aviation Administration (FAA) shows that the Optus-X satellite is set to liftoff atop a Falcon 9 during a window open from from 4:29-6:57 p.m. EST. The launch will be from Cape Canaveral Space Launch Complex 40, and travel on a due-east trajectory.

SpaceX is set for a Sunday evening launch from Kennedy Space Center with a Monday launch attempt from Cape Canaveral on tap. First up is a Falcon 9 rocket from KSC’s Launch Pad 39-A on the Optux X/TD7 mission to launch a geostationary communication satellite built by Northrop Grumman for the Australian company Optus at 5:28 p.

Live updates from Thursday morning’s SpaceX Starlink 6-68 mission that launched a Falcon 9 rocket from Cape Canaveral Space Force Station in Florida.