Rocket: Chang Zheng 3B/YZ 1; Payload: BeiDou-3 MEO-3, BeiDou-3 MEO-4; Date: 12 February 2018, 0503 UTC; Launch site: Xichang Satellite Launch Center, China. Success of the mission was confirmed some four hours after launch, following insertion of the satellites into their intended orbits around 21,000 km above the Earth.