I fly the 787, there is no night setting on any of the aircraft I have flown, including the 757/767 and the air pressurisation system is fully automatic.
In the cruise, once the cabin has settled at it's max press diff, then it will not vary at all, even with further climbs. It will only change when descent starts. (or a cabin depressurisation!)
However as been alluded to above, the 757/767 had a cabin altitude of approx 7500" but the 787 does indeed do 6000"
All that we can do is alter the temperature of the air conditioning but again, there is no "night setting".
On the 787, we can set a temperature, but the Cabin Crew can alter it themselves by +/- 2 degrees C
Last edited by Smudge's Lot; 21st Jul 2022 at 14:13.