Since you asked... GLAST is at the Cape and being readied for launch, I gather.
Tentatively schedule for June 3rd, but if the Discovery launch scheduled the week before slips then GLAST gets pushed back. They're good through June 6th, don't know how their launch window is if they slip into the next week.
The betting pool here is down to only two remaining people, and the discriminating date is the 17th.