Windows 10
Microsoft added a blue light limiting feature to Windows 10 in the Creators Update that was released in April 2017. Called “Night light,” this feature shifts the Windows 10 display to show warmer colors that reduce the amount of blue light that’s emitted.
Step 1: Open up the settings menu by searching for it in the Windows 10 search box, or press the Windows key and “X” and then click “Settings.”
Step 2: Choose “System” from the menu.
Step 3: Select “Display” from the left-hand menu if it isn’t already.
Step 4: Toggle the “Night light” to on.
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To configure the Night light feature, click on “Night light settings.” Configuration options include the ability to turn the Night light on immediately, adjust the color temperature while the feature is enabled, and schedule when the Night light will turn on and off.
To set the schedule, toggle the “Schedule night light” option to on. Then, you can either choose to let Night light turn itself on at sunset and off at sunrise — automatically determined by your location — or you can set the time manually by clicking “Set hours” and choosing when the feature should turn on and off.
MacOS
Step 1: Open “System Preferences.”
Step 2: Select “Displays,” then click on the “Night Shift” tab.
On the settings page, you can configure when the Night Shift feature will automatically run, turn it on until the next day’s sunrise, and set the color temperature to your preferences. In terms of scheduling, you can let MacOS turn it on and off at sunset and sunrise based on your location, or you can set a custom schedule.