The best one I see is TK PEK-IST 00:10 - 05:25 connecting to TK IST-JFK 07:25 - 11:20.
Both involve late night/early morning departures, though.
Edit: Sorry, how about AC PEK-YYZ 18:05-18:50, then connect to AC
flight departing 8:35PM/8:45 PM/8:50 PM - 1 each to LGA/EWR/JFK.