I recently updated to macOS Mojave and, although I think the Dark Mode is cool and has its place, it frustrates me no end that it seems to be on some kind of schedule. It turns itself on every day at 19:30 and I have no idea why, or how to turn this feature off.

Why is this setting activated and how do I change or edit this?

2 Answers 2


There's no scheduling available for Dark Mode at all. Perhaps you're thinking of Night Shift, found in System Preferences > Displays, which changes the color of the monitor to display warmer colors, which are better at night to minimize the effect of blue light on the production of melatonin.

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  • 1
    I did mean Dark Mode, not Night Shift. However it appears that in fact this scheduling process is a feature of F.lux which was activated (presumably by default) on my machine
    – Zac
    Commented Apr 5, 2019 at 20:55
  • Ah ha! Thus it is solved.
    – IconDaemon
    Commented Apr 6, 2019 at 0:23
  • @Zac could you add your solution as a descriptive answer and accept it? Would make it easier for others with the exact same problem to figure out what's up.
    – Kay
    Commented Oct 12, 2021 at 16:26

There are three System Preferences you have to configure:

  • Enable/Disable Dark Mode (General Preferences)

    enter image description here

  • Enable/Disable Dynamic Desktop Images (Desktop & Screen Savers)

    enter image description here

  • Enable/Disable Night Shift (Display)

    enter image description here

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