Oh no, it's a 'visit this link' post!

17:17:17, August 17th. At this instant, through the magic of atomic clocks, a bunch of people take pictures at the exact same moment, just because. I believe this corresponds to 10:17 am in Seattle, 11:17 am in Rapid City, 12:17 pm in Ames, and so on... other times elsewhere, I would presume.