Actually, the term 'day' is the measure of the time spent on a part of the earth facing the sun. The measure of 'night' is the measure of time spent on a part of the earth that is not facing the sun, thus if the man was flying an aircraft that is flying faster than the speed the earth rotates, flying straight east, then his 'day' is longer. And since he was probably flying for some time, and lets say sitting between to large chat people, on large chatty person with the aisle seat had a child. Then he would seem exhausted. and the bartender is one of those person that likes to know everything about everyone, knew about the man's trip, thus trying to stir up a conversation, jokingly ask the man, "had a long day?", the man, who has just been flying for several hours between a new couple that look like basketballs, both had a nasal infection, like to talk about every item in the 'Sky Mall' magazine, and was flying for the first time with their new born baby dan, was tired and not in the mood to talk to anyone, decided to be smart with the bartender remarked "No, all days are 24 hours long. The bartender sensed that the man was not in a good mood, decided to leave the man alone and get him his drink. P.S. Slowpokes are amazing fishermen. aBig Ragin Troll out.