Space Shuttle is scheduled to launch at 2:28 am Tuesday 3/11 (still Monday night to most of us) and has a 10 minute launch window.
For you night owls or others who have never seen a night launch, might be worth setting the alarm to check it out.
Here's a link to a site that maintains a timed log of all the events leading up to a launch...might want to check it before you go to bed to make sure the launch is still on.
http://spaceflightnow.com/shuttle/sts123/status.html
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