Smooth.It's a moving target!!!!
From the SpaceX website:
SpaceX is targeting Thursday, April 11 for a Falcon Heavy launch of the Arabsat-6A satellite from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. The launch window opens at 6:35 p.m. EDT, or 22:35 UTC, and closes at 8:31 p.m. EDT, or 00:31 UTC on Friday, April 12. The satellite will be deployed approximately 34 minutes after liftoff.
All the other launch windows were ~2 hours. I wonder if what's on their website is a typo, or, as I suspect, if they are referring to 00:31 UTC, which is Friday UTC time.
Yes, it's a Boeing-Lockheed Martin combo, United Launch Alliance, and despite government subsidies, ULA is totally outdone by SpaceX.That is something awesome. Beating the ass off Boeing too. Mind you, they got other things on their mind right now.