How abouts all within the same hour at night?
You can enter multiple times per hour, so it increases your chances of winning an iPod.
Just to let you guys know, I've emailed coca-cola asking if iPods are given away during the early hours of the morning, I haven't received a reply yet so maybe I won't until Monday, but I'll post back when I know.
The T&C's say the following, so I think the answer is clear!
"Prize draws for iTunes songs will take place every minute between 00:00 on 28th May 2007 and 23:59 on 26th July 2007 (inc). There will be a total of 86,400 draws for iTunes songs."
"Prize draws for iPods will take place every hour between 00:00 on 28th May 2007 and 23:59 on 26th July 2007 (inc). There will be a total of 1,440 draws for 80gb iPods."