That means (same as last year, and the year before....) take a picture anywhere in Philadelphia, any time today, and send it in. Philadelphia Photo Arts Center will print it, and it will be in an exhibit up at Crane Arts (I think in November).
(this isn't a picture I'm sending in, but it's an outtake from other blog, standing in for The Picture. I'll take the right picture soon, the day is young.)
This project started a few years ago, and every time I've been to the exhibit, there are a million more pictures than the time before, which is cool. It's a little like IRL Instagram (so: cats, selfies, skylines, etc) but also a little better.
Get yours in this year. Then we can go to the show and drink wine and look for our pictures on the wall and dodge people we don't want to see.
(Oh, and bonus big deal: PPAC had a successful Kickstarter for this project, and will be posting 40 Photo Day photos on billboards this year. That's cool.)