It is now past 1:00 a.m, Sunday, 2011-05-21, and I'm still here. Did the Rapture happen?
I could say I don't know because I'm in the woods, but since "The Prairie Home Companion" is on the radio right now, I'd say the Rapture didn't happen.
Why did I pick Jerusalem time? If you're going to be precise in Biblical predictions, you should use time references from the place where they were supposedly made. But then when has Biblical consistency been used by many modern-day prophets?