Flight times are as follows:
SK987 CPH 23:40 ICN 18:15+1 (11h 35m)
SK988 ICN 23:45 CPH 06:05+1 (13h 20m)
I'll be interested to see how SK handles the inflight service on the eastbound. Dinner at 1 AM? Or skip the evening service and serve breakfast/lunch instead?