SpaceX founder and CEO Elon Musk tweeted today that the first Falcon Heavy launch is scheduled for February 6. The launch is from Kennedy Space Center’s Launch Complex 39A, which SpaceX leases from NASA.

The formal announcement comes one day after the NASASpaceflight.com website broke the news and three days after a successful static fire test that ignited all 27 engines that will power the rocket. At that time, Musk said the launch would take place “in a week or so.” Today he tweeted that February 6 is the date.

Aiming for first flight of Falcon Heavy on Feb 6 from Apollo launchpad 39A at Cape Kennedy. Easy viewing from the public causeway. — Elon Musk (@elonmusk) January 27, 2018

The launch window is 1:30-4:30 pm ET. February 7 is a backup date.

Bear in mind that launch dates for any rocket, never mind a brand new one, can change at any moment.