mm43, I seem to only be able to dream about a circadian rhythm that even approximately matches Earth's. I often joke I was born on another planet. Days about 28-32 hours long are ideal for me. And if I find myself working on a tough problem even that goes away. "Shop 'til you drop," is rhetoric, "Code til you drop," is reality, it seems. And when I do synchronize it's about "1200 to rise and 0400 to bed" in the local TZ no matter where I am. (SIGH!)
"That gurl ain't normal!"
Maybe they need to find pilots that can work well at night? (Probably there aren't near enough of them to matter.)