The launch will happen at 3.22pm local eastern time, or 8.22pm in the UK.
Full coverage should start an hour or two before, if the launch goes ahead. Though everything will happen as it did on Wednesday, so if you’d like a preview then click through to the video down below!
It’s an “instantaneous window”, which means liftoff must happen at exactly that time or not at all. (That’s part of the problem with the weather: unlike with some other launches, mission controllers have no flexibility to wait out any bad conditions.)