Eastern during an instantaneous launch window.
The company launched a Falcon 9 rocket from Vandenberg Air Force Base in Southern California.
But Sunday's flight marked the first time SpaceX attempted a landing at Vandenberg, a milestone made possible by extensive environmental and safety studies that concluded the noise and possible aftermath of a failure would not cause any significant damage or harm to area wildlife.
If the mission goes according to plan, Sunday night will mark SpaceX's first landing of this sort on the West Coast.
SAOCOM 1A 3,000-kilogram satellite built by INVAP and this deployment was done in conjunction with Argentina's space agency with the goal of radar-imaging the earth. By that year the launch had slipped to 2014, and would continue to slip further as Falcon 9 explosions in 2015 and 2016 compounded earlier delays.
Pres. Trump hails NAFTA revamp, but quick approval no sure thing
The measures in the new deal - which Mr Trump dubbed "US MCA" - "will support many - hundreds of thousands - American jobs". But he stressed the government is committed to compensating them for any financial hit. "They told me they were anxious ".
That mission was a success, and SpaceX also landed the first stage of the Falcon 9 at a new site (Landing Zone 4) near its Vandenberg launchpad in a historic first.
Baldwin wasn't the only one to capture awesome views of SpaceX's launch. CONAE will operate the satellite as part of the Argentine-Italian System of Satellites with the Italian Space Agency, coordinating observations with Italy's four Cosmo-Skymed X-band SAR satellites.
Shortly afterward SpaceX confirmed that SAOCOM 1A had been successfully deployed in record time.
It was a night sky sight so dazzling, the mayor of Los Angeles told everyone not to worry about aliens: a SpaceX Falcon 9 rocket streaking into the evening sky, leaving a brilliant glowing plume in its wake. That almost identical satellite will launch in "the near future", also on a Falcon 9, according to the mission narrator for the Saocom-1A webcast.