This is where f.lux - https://justgetflux.com https://justgetflux.com - is so great. After sunset in your location it gradually bleeds blue light from your disp

This is where f.lux - https://justgetflux.com https://justgetflux.com - is so great. After sunset in your location it gradually bleeds blue light from your display: also at work I use it to just orange-ify the display a bit at a constant rate - because work is lit by fluorescents - and on a bright monitor it noticeably reduces eyestrain.