What is Windows Night Light?
To schedule Night Light so it turns on automatically, select Start > Settings > System > Display > Night light > Night light settings. Under Schedule, do one of the following: To have night light turn on at sunset and then turn off at sunrise, choose Sunset to sunrise. To set your own hours, select Set hours, then enter the time for night light to turn on and turn off.
Windows Night Light Screenshots
Windows Night Light Features
Windows Night Light information