CAPE CANAVERAL SPACE FORCE STATION — After a few days of setbacks, SpaceX finally launched the Starlink 12-13 mission on Wednesday might with its brand-new Falcon 9 first-stage booster for a Starlink mission. Which made it a rare double-launch day.

The Falcon 9 rocket sent up Starlink 12-13 mission from Space Launch Complex 40 at Cape Canaveral Space Force Station, stated SpaceX. 

The launch was at 10:34 p.m. ET with backup opportunities until 2:19 a.m. ET on Thursday, Feb. 27. That means between those times, SpaceX has opportunities to launch its Falcon 9 rocket.

Originally, it was supposed to go up at 11:42 p.m. ET on Sunday before it was scrubbed. And then it was re-scheduled for Monday and Tuesday nights before being pushed back.

For Wednesday night's launch, the 45th Weather Squadron is giving a "95%" chance for good lift off conditions, with the only concern being the cumulus cloud rule.

Find out more about the weather criteria for a Falcon 9 launch.

If needed, additional launch opportunities are also available on Thursday, Feb. 27, starting at 9:52 p.m. ET.

This was a rare-double launch day as the IM-2 lunar mission took off a few hours before.

Brand-new booster

This will be the maiden flight for this Falcon 9’s first-stage booster B1092.

After the stage separation, the first-stage rocket landed on the droneship, Just Read the Instructions, that was in the Atlantic Ocean.

About the mission

The SpaceX-owned Starlink company will see 21 satellites go to low-Earth orbit to provide internet service to many parts of Earth.

And they will not be alone.

Dr. Jonathan McDowell, of Harvard-Smithsonian Center for Astrophysics, has been tracking Starlink satellites.

Before this launch, McDowell recorded the following:

• 7,083 are in orbit
• 6,340 are in operational orbit