All computer monitors emanate light which hits our eyes all the time. Prolonged usage could tire our eyes. Besides, after sunset, the blue light emanating from the monitor could even hurt our eyes adversely. Windows 10 allows us to change our display settings to reduce the strain on our eyes.
On any blank area of the desktop, right click with your mouse and then select Display Settings. In the Find a Setting box on the top left, just type Night Light and select the item displayed for Night Light. The Night Light Settings will be displayed. Here, you can turn Night Light on or off manually. You may also select the strength or intensity of the light when the Night Light is on, based on your comfort level.
If you wish to automate the process, you could set the time when Night Light comes on and when it would be turned off. Further, if you switch on your location settings for Windows, the system will automatically turn it on at Sunset Time and turn it off at Sunrise.
Pretty cool and comfy!