Watch a live view of SpaceX’s Cape Canaveral launch pad (members only)

Ground crews at the Xichang launch center in China postponed the launch of a Long March 3B rocket into orbit Tuesday that was to complete the deployment of the Beidou navigation fleet, a project approved by the Chinese government in 1994 to end reliance on the U.S. military’s GPS network.

A solid-fueled Vega rocket has been stacked on a launch pad in French Guiana for liftoff Aug. 1 with two Israeli-built satellites — one developed in partnership with the French space agency for environmental research, and another to gather intelligence for the Italian military.

SpaceX’s launch of the Starlink 6-56 mission will move the company past the total number of Space Shuttle Program missions from Launch Complex 39A. Liftoff is set for 2:42 p.m. EDT (1842 UTC).