There's been a really great pair of apps in Android for the last couple of years that handle "Night Shift" functionality. The one that dims the screen further

There's been a really great pair of apps in Android for the last couple of years that handle "Night Shift" functionality. The one that dims the screen further than the 0% brightness setting called Night Mode, and one that skews the colors to reduce blue light called Bluelight Filter. Both work remarkably well together, and if your screen is AMOLED they even save you a little battery power.