Liftoff is scheduled for 20.40 GMT.
Turksat-4B is built by Mitsubishi Electric. The satellite will provide telecommunication and direct TV broadcasting services over a wide geographic region between west of China and east of England spanning Turkey, as well as Europe, Central Asia, the Middle East and Africa.
Turksat-4B will be positioned at 50 degrees east longitude and consists of multiple transponders with an expected on-orbit maneuver life of 30 years. Turksat-4B satellite will expand the space capacity of Turkey and provide enhanced performance to its coverage areas.