_____                                           (\
  /     \   ____   ____   ________________         .`.
 /  \ /  \_/ __ \ /    \ /  _ \_  __ \__  \        | |
/    Y    \  ___/|   |  (  <_> )  | \// __ \_    __| |__
\____|__  /\___  >___|  /\____/|__|  (____  /   /  |_|  \
        \/     \/     \/                  \/    \_______/

Tool that adapts the temperature of your screen backlight depending on the time of the day. The most common use is to reduce the intensity of the blue light in the evening, to help falling asleep.