Mine arrived at ICN at 7:59 pm as well.
Next UPS flight to Anchorage leaves at 9:55pm (KST) and arrives in Anchorage around 12:45pm (AKST). [flightradar24.com]
From there, my guess is that it departs Anchorage at 2:50 pm (AKST) and arrives Louisville around 12:44 am (EST).
That gives UPS 24 hours to deliver from Louisville.
Next UPS flight to Anchorage leaves at 9:55pm (KST) and arrives in Anchorage around 12:45pm (AKST). [flightradar24.com]
From there, my guess is that it departs Anchorage at 2:50 pm (AKST) and arrives Louisville around 12:44 am (EST).
That gives UPS 24 hours to deliver from Louisville.