Originally Posted by
ArizonaGuy
Say what? What do you mean it's a day flight? It's a redeye like the vast majority of eastbound flights to Europe. Do you mean it's a day flight because it leaves in the early afternoon and spends a bit of time in daylight? That will change rapidly as winter approaches, when the OP intends to travel. Early afternoon SFO departures will still be in darkness within a couple hours flying over Canada, and it'll barely be daylight in Ireland after 8am.
I view any flight that departs, my time, in the early afternoon, as a day flight. If you stay on your departing local time, you arrive at midnight in Dublin, although it's morning there. For people like me that find it difficult to sleep on planes, it's perfect. I can arrive at my destination, take a short nap and still have a whole day to play.