I noticed this when I booked my ticket months ago. I reported it and they knew all about it ...(I could almost hear her shrug over the phone as if "that's just the way it is")

Example: Try to book UIO-IAH July 1 at 12:35am
Results only show flights leaving on July 2 at 12:35am. But the upper "box" still shows July 1. And stranger still, I get the ! Please note this flight involves a date change message.
There is no date change -- it arrives IAH at 5:50am the same day.
So if I want to fly July 1, I have to put June 30 in my request.

This is just a rant because at least now I know the "trick" I need to do when changing my ticket, but I nearly F'd up royally not noticing this the first time I booked.
Does anyone else think this is really odd?