Twenty Starlink satellites — 13 equipped with direct-to-cell capabilities — will head into orbit aboard a Falcon 9 rocket poised to launch from Vandenberg Space Force Base as soon as Wednesday night.

The SpaceX rocket’s lift off from Space Launch Complex-4 on South Base will aim for 7:52 p.m., with other opportunities available until 9:42 p.m., according to firm’s update on Wednesday.

If needed, additional opportunities are also available on Thursday, starting at 8:20 p.m.

Starlink, designed and manufactured by SpaceX, involves thousands of satellites to provide Internet service across the globe, including places where the access isn’t available or reliable. 

The 13 direct-to-cell satellites will join others previously launched to provide text and eventually voice capability via the Starlink system. 

The firm has partnered with several wireless phone providers around the world, including T-Mobile in the United States, for Starlink service, which will supplement, not replace, the land-based telecommunication companies. 

For Starlink missions, the first-stage booster will land on a droneship positioned in the Pacific Ocean.

This will be the fourth flight for the first-stage booster used for this week’s mission.

The rocket will deploy the satellites slightly more than an hour after launch, according to SpaceX. 

Vandenberg’s launch will be the second of two planned Starlink missions on Wednesday with the other set to carry 23 satellites from Florida.

A live webcast of the mission is scheduled to begin on the SpaceX account on X (formerly Twitter) about five minutes before liftoff.