On August 10, the S.S. Ellison Onizuka launched on an Antares 230+ rocket from Pad-0A at NASA’s Wallops Flight Facility. The NG-16 countdown was hampered with helium and ground computer issues leading up to the final T0 mark.
But teams at Northrop Grumman were able to launch at the end of the launch window at 18:01:05 EDT, or 22:01:05 UTC, with Antares performing a better-than-expected ascent to orbit for the Cygnus spacecraft.