You guys don't know what redeyes are.
Flying a transcon for 4.5 hours when it's dark is a piece of cake compared to flying from NRT to SFO unaugmented and having the sun come up over the middle of the Pacific with 5 more hours to go on a 10.5 hour flight.
Fortunately, those days are no more...Augmenting, CPDLC and ADS-B have transformed the job for the better.