The whole thing was never mean to predict the end of the world anyway, it just means the end of their "baktun" cycle and the beginning of a new one. The Mayans were just all about math and finding the patterns and cycles in the stars and such. As mentioned above, today just means we have a special galactic alignment and it won't happen again until the end of the next baktun cycle. Think of it like one full "revolution" of the galaxy if it helps, just the same as one full day on Earth = a full revolution around the sun.

