The launches commenced on December 17 at 03:52 Moscow time, when the Falcon 9 rocket successfully lifted off from the SLC-40 launch site in Florida, deploying the RRT-1 navigation satellite into orbit.
Subsequently, the Falcon 9 launched again on December 17 at 16:19 Moscow time from Vandenberg Space Force Base in California, sending military satellites NRO, developed by Northrop Grumman on the Starshield satellite platform by SpaceX, into space. This mission was conducted on behalf of the U.S. Department of Defense.
The Dragon cargo spacecraft from the CRS-31 mission, which undocked from the ISS on December 16, completed its flight successfully, splashing down on the 17th at 21:39 Moscow time in the Gulf of Mexico near the coast of Florida.
SpaceX's day concluded with the successful launch of the Falcon 9 at 23:59 Moscow time as part of the mPower-E mission. Launched from Florida, Elon Musk's "workhorse" sent two O3b mPOWER communication satellites from the Luxembourg-based company SES into a medium Earth orbit at an altitude of 7,825 kilometers.