A United Launch Alliance (ULA) Atlas V 531 rocket will launch the SES-20 and SES-21 satellites into near-geosynchronous orbit to provide television broadcasting services across the United States. The commercial dual-payload launch is in service to satellite operator SES of Luxembourg. Liftoff will occur from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida.

Launch Date and Time: Oct. 4 at 5:36 p.m. EDT (2136 UTC).

Go Atlas! Go Centaur! Go SES-20! Go SES-21!

Live blog: bit.ly/av_ses

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