I've been amazed by some of JetBlue's schedules, too. For example, if you want to fly JFK to Aguadilla, Puerto Rico, you land at 3:30 am. What the hell do you do when you get in at 3:30 am? Could you rent a car? What about showing up at a hotel (are you going to pay an extra night for 2 hours of sleep -- and it's probably not even possible to check in at a smaller hotel). Anyone want to make friends or family pick them up at that time? It's just crazy. It's stetches utilization to the point of absurdity.
BTW, CO has a competing flight that leaves EWR at 6 pm and arrives shortly before 11 pm. The fare's usually the same. CO's return flight leaves after 9 am, while JetBlue's is at 6 sharp.
Me thinks JetBlue is probably losing money there.