Recently updated my Huawei phone, and it shows a new feature for the eye protection. It will adjust the screen to yellowish, to protect our eyes.
I tried to look for some scientific support for this feature. Then I found this. And I finally know that, I am not actually a night owl person, but just because I am looking at the monitor frequently, that is why not feeling sleepy at the night.
Recognizes that exposure to excessive light at night, including extended use of various electronic media, can disrupt sleep or exacerbate sleep disorders, especially in children and adolescents. This effect can be minimized by using dim red lighting in the nighttime bedroom environment.
(American Medical Association’s Council on Science and Public Health, 2012)
And this f.lux, it will automatically adjust your screen colour to reddish based on your location. You can get your location (latitude and longitude) using GPS. As a result, my screen will automatically turn to reddish around 6:30pm.
f.lux is cross platform, available for Linux, Windows, Mac, iPhone, and Android. Arch Linux user can install through AUR.
There is another similar package, Reshift. But I personally more favoured on f.lux, because the configuration is easier and there are presets of colour temperature.
If you care about healthy sleep, try this.