According to the film, today is the day Marty McFly arrives Back to the Future. This is the destination date, January 4th 2013. Here we are, and nobody has reported sightings of Marty just yet. Apparently it was just a film or something.
UPDATE: Multiple people are claiming this image is a fake and the actual date is in 2015. However this is a trending image today on the web, and that is why we covered it.