No, you can't change it, you have to figure it out for yourself...here's how...
Way down at the bottom left of EVERY Ebay page is a tiny link that says Ebay Official Time. Take a look, it has all the time zones. They are 3 hours earlier than you. So if you want your listing to start at 9pm your time, you have to schedule or post it for/at 6pm Ebay/Auctiva time. Confusing? YES
>>>Ebay and Auctiva are 2 hours ahead of me..so I always schedule for 5:30, which means they start at 7:30 MY time, which is what I want.