Non-overnight Eastbound transpacific?
 

Eastbound transpacific flights: are there any that is not an overnight nor a redeye? Quite frankly I can't think of any. Even though many of them depart during daylight and arrive at daylight, the flight will undergoe a darkness->morning pattern somewhere.

Even UA's HKG-SFO is considered an overnight sector.

Impossible.

For example: When it's 6:00 am in TYO, it's 2:00 pm in SFO. Even though the flight is only 9 hours, you can't arrive before dark.

Edited to use a different example.

You could theoretically *almost* manage it, but not quite. The shortest "real" transpac I can think of is NRT-YVR at 8h40m-9h00 long. If you click here, you'll be taken to a neat US Naval Observatory page that shows the shape of the "terminator" line that separates night from day, as much as the two can be separated anyway. Enter June 21 - the solstice will give you your best crack at hitting as much daylight as possible - and 20h00 UT. Japan is UT+9, so 20h00 = 5am in Tokyo, and the sun has just come up. The graphic will show that you now have the largest possible swath of daylight to fly across. Then go back and enter June 22 05h00, which is when you land at YVR 9hrs after leaving Japan - it's 10:00 at night (9:40 if you caught a JAL flight) and Vancouver will have just slipped into darkness (I'm there, it's currently 10:15pm, and we have a deep blue sky with the last remnants of a sunset).

Practically, however, it's a different story. All the direct NRT-YVR flights leave in the early evening so you fly right into a big ole pile of nighttime. :(

I suspect that even if there theoretically were a daytime transpac going east, (on a Sonic Cruiser or similar nearly-supersonic airliner), it would be hard to make money because nobody could connect to or from the flight at either end. You might be able to get enough strictly O&D traffic on, say, NRT-LAX, but even that would be stretching it.

While we're on the topic of NRT, keep in mind that there are no ops at NRT before around 9 AM due to local noise restrictions (and the fact that it takes at least an hour just to get out there), so our hypothetical day flight would have to leave from a slightly more distant 24-hour airport like KIX or ICN.

If my calculations are correct (hopefully...), you could leave AKL at 0700 in December and arrive into LAX around 22:00 due to seasonal time zone differences. Strictly hypothetical of course

Aren't there arrivals at NRT before 9am?

Depending on departure time, I suppose that a near polar route like HKG-YYZ would be more-or-less completely in daylight if flown a few weeks either side of the northern summer solstice.

I flew HKG-EWR on CO a few years back in June and the sun got very low, but never quite set because the "night" section was over the pole.

But HKG-EWR is not eastbound transpacific, which was the original question. :D

Look at the great circle map. It's not eastbound or over the Pacific.

A theoretical TPAC daytime flight would be TPE-ANC (runs now but overnight) but it'd have to leave TPE at the crack of dawn to arrive at ANC before midnight.

PKC-ANC would work, and according to Wikipedia there are two airlines that fly this route.

Petropavlovsk-Kamchatsky Airport

The OP said "non-overnight", not "all-daylight". I'd consider a flight that left at 6am and arrived at 11pm a non-overnight flight.

Super cool link!

When you fly east over 8 time zones, you're essentially turning the 24-hour day into a 16-hour day. So it's really hard to complete a 13-hour flight within a 16-hour day and not have the flight be defined as "overnight."

Have you been on the flight before?

It is both eastbound, and, over the Pacific. :)