UPS doesn’t release operational info like this to anyone so only clues are in the bid packages which have been showing more and more day flying (at least on 75 domestic-all I’ve paid attention to). I’m still on Z so can’t give more specifics. Next bid period is when all the remaining postal volume comes onboard and then it will take a few bids for optimizer to fully ruin it so probably won’t have a good answer to that for about 6 months or so.

Day flying is nice for the circadian rhythms but that are often long days, with flow, 1 million frequency changes, reroutes, etc. Nite flying is a lot easier in some of these aspects!!