I love the day flights to HKG. Though I usually take CX879 from SFO in F, which BTW I just did again on Wednesday. But my sleeping pattern on that flight usually is only limited to just 2-3 hours and usually during the early to mid stages of the flight, which more or less is a nap as oppose to an extensive sleep. This is key for me to ensure that I'll be tired enough to just crash into bed in upon the evening HKG arrival.

Ever since I arrived Thursday evening, I never felt any jet lag effects. That's why I prefer the daytime departure as oppose to those late night departure.