How do you know you have the correct flight? What if they have more than one UPS plane to a different UPS hub?
Any ways, since everyone is making assumptions, I am going to go with the facts. Originally it was September 23 and given that my phone has a departure scan in korea at 00:01 local time, I am going to go with the original estimate. No phone for me tomorrow despite the Sep 20 revised estimate.
Considering that's the basic flight path of Apple products (based off of my pre-order for the new macbook), even if it doesnt show up tomorrow it'll show up by the next