sense of time on time   

colour temperature

The colour of time.

references & inspiration

The rotation of the earth on its axis means that most places on the surface of our planet experience significant rhythmic fluctuations of light and energy from the sun. This never ending cycle of light and dark, warmth and cold, has caused every cell to host an inbuilt molecular clock - a natural time measurement evolved to keep organisms highly synchronised with the 24-hour cycles of the sun. However, our ever increasing commitment to time in front of artificially backlit screens (an average of 10 hours 39 minutes for American citizens) is now significantly disrupting our highly attuned relationship to light that we have adapted over the course of evolution.
- The Guardian view on analogue clocks: their time has not run out
Night Shift automatically shifts the colours of your display to the warmer end of the colour spectrum after dark. This may help you get a better night's sleep.
- Apple iOS, Display & Brightness Settings