According to Harold Camping, Saturday is the big day.
The Rapture is at 6 p.m. on May 21, 2011, where ever it's 6 p.m. first, with the "fantastically big" world-ending event taking place on a time zone by time zone basis.
That means we can expect the Rapture to start when it hits 6 p.m. at the International Dateline at 180 Longitude — roughly the between Pago Pago, American Samoa, and Nuku'alofa, Tonga. We'll know it's Judgment Day because there will be an earthquake of previously unprecedented magnitude, Camping predicts.
So, according to these calculations, the Rapture will actually begin like a rolling brown out across the globe at 11 p.m. PST on Friday, May 20th. "Everyone will be weeping and wailing because they'll know in a few hours it'll come to their city," said Camping.
How one man has prepared.
How I'm preparing: Not doing laundry. Gin and tonic time!