Just find out they have changed the timings of the CX888/889 flight to YVR and JFK from Oct onwards:

It will now depart HKG at 0055 and arriving at JFK 0550.

I actually liked the old schedule better. But don't know why they do this as the 74A have to sit there for over 12+ hours to wait to come back to HKG as 889 remains at night.

However I think this is in anticipation of all US routes being 77A, on vertain days 888/889 will be on 77A.