

When you're under the Night Shift menu in System Preferences, you will see an option to adjust the colour temperature of Night Mode. Click the Siri button in the menu bar or the dock, and then say "Turn on Night Shift" or "Turn off Night Shift" to turn the Night Shift feature on or off, respectively. You can also use Siri to turn on Night Shift. When it slides out, select the Notification Center tab at the top, then click on the "Night Shift" turn the feature on or off. Simply click on the Notification Center menu bar icon (three lines). If you want to quickly enable or disable Night Shift, you can go back to System Preferences and use the "Manual" setting to force Night Shift to turn on - or you can use the Notification Center. As for the "Custom" option, it lets you choose a start and end time for Night Shift to turn on every day.

To use this option, your location must be enabled under the Security & Privacy Preference. The "Sunset to Sunrise" option makes Night Shift to turn on each night when the sun sets and turn off when the sun rises based on your local times.

With Night Shift, there's no need to install an additional app.

It significantly changes the look of your display, and while some people may not be a fan of that, it's certainly worth trying if you're prone to using your Mac late at night and yet have trouble falling asleep when it's time for bed.
