macOS defaults

Appearance

Flash clock time separators ​

When enabled, the clock indicator (which by default is the colon) will flash on and off each second.

  • Tested on macOS:
    • Ventura
    • Monterey
    • Big Sur
    • Catalina
    • Mojave
  • Parameter type: bool

Set to false (default value) ​

The time separator stays solid continuously.

bash
defaults write com.apple.menuextra.clock "FlashDateSeparators" -bool "false" && killall SystemUIServer

Set to true ​

The time separator flashes every second.

bash
defaults write com.apple.menuextra.clock "FlashDateSeparators" -bool "true" && killall SystemUIServer

Read current value ​

bash
defaults read com.apple.menuextra.clock "FlashDateSeparators"

Reset to default value ​

bash
defaults delete com.apple.menuextra.clock "FlashDateSeparators" && killall SystemUIServer

Set value from UI ​

  1. Access Clock settings from macOS UI
  2. Toggle "Flash the time separator" value