Dang that's LATE. I've always flown the daytime flights to ATL on KE...but I've wondered if an evening flight would be "easier" for jet lag. I've gotten very good at sleeping as little as possible before AM flight - sleep on plane as much as I can - stay awake all day in the US upon landing.
But it seems even more opposite - 10:50 PM departure is 9:50 AM in the USA - so one should stay awake on the flight....but it's impossible because it's so late....so then you land in NYC at 11 PM and then do what haha?
The Midnight JFK flight now that's easy - sleep on US time, wake up and have a LOOOOONG day in Seoul.