Disappointing. We almost forgot to mark the 168th year since October 22, 1844. Because Great Disappointment Day is a memorial to missing an event—either literal or figurative—almost forgetting it is perhaps a proper element of its remembrance. Here's to the worst all-nighter of all times, time, and half a time!
This is a companion discussion topic for the original entry at http://spectrummagazine.org/node/4829