The launches began on December 17 at 03:52 Moscow time, when the Falcon 9 rocket successfully lifted off from the SLC-40 launch site in Florida, placing the navigation satellite RRT-1 into orbit.
Later that same day, the Falcon 9 launched at 16:19 Moscow time from Vandenberg Space Force Base in California, sending military satellites for the NRO, developed by Northrop Grumman based on SpaceX's Starshield satellite platform. This mission was conducted on behalf of the U.S. Department of Defense.
The CRS-31 cargo spacecraft Dragon, which undocked from the ISS on December 16, completed its flight by successfully landing on December 17 at 21:39 Moscow time in the Gulf of Mexico near the coast of Florida.
The day for SpaceX concluded with a successful Falcon 9 launch 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.