Flight Times

Does passenger demand decrease if your flight departs/arrives between 00-06? or does passenger demand stay the same no matter what time of day it is?

In AS time of departure and arrival don't have any influence on the demand. Fortunately.

Has this been confirmed by Airlinesim? 

Not confirming on ASs behalf,  but over 5 years playing the game and I can tell you as a well tested fact demand is the same every day of the week, anytime of the day

Yes, I can confirm that.

Great thanks