My CRJ-200 co-pilot has a life of his own.

[StormyPilot]

Just did a flight from a jam packed Heathrow on Vatsim in the late day arriving post-dusk at a quiet Bristol, and I noticed my co-pilot had adjusted himself to the changed circumstances.

Next time your flight takes you through a transition from day to night, keep an eye on him, there's more life in this fellow than at first might appear.

Hint hint  8).