Since there's a discussion on first station to go 24 hours, I thought about bringing up (per market) the last station to go 24 hours. For Chicago, I would go with PBS affiliate WYIN, licensed to Gary, IN. They went 24 hours around 2007 or 2008 (I believe 2008), just before the analog shutoff date of February 17, 2009 (was changed to June 12th, 2009, & WYIN did shut off analog on that date). Before 2008 (or 2007), they signed off between midnight & 2am. Since going 24 hours, their regular schedule only goes to 12:30 - 2am, then the overnight hours are filled with beg-a-thon programming. When they carried Create on a subchannel, the main channel still signed off, but the subchannel was on the bird. Since adding a locally programmed PBS Kids Go channel, that is truly 24 hours, with the kids shows in 6 hour blocks, airing the same show 4 times a day (same way Create is programmed).