This is how it looks right now

This is how it looks right now

These are my "Language & Region" settings

These are my customization settings

There is clearly a bug involved. I don't want use an app to solve such ridiculously simple prolem. It should be reading this format from somewhere right?

  • What an amazing language calls a day of the week Pazartesi? I like it. Oh, Turkish. Cool. – Petruza Sep 12 '16 at 13:05
  • Anyone know how to get the date format mm/dd/yy? – JBis Jun 24 '18 at 22:44

I don't know whether you ever got the above method to work, but it never did the trick for me. However, I seem to have found a way that works without resorting to a 3rd party app. I was pulling my hair out about this because I wanted to have a '.' as the time separator, and even when using the defaults command like so:

defaults write com.apple.menuextra.clock "DateFormat" "EEE MMM d  H.mm"

It would successfully assign the value, but every time I killed the menu bar, it would inexplicably revert to the default format. I'm not sure how permanent this will be, but I did a quick loop in bash and after running it for a few seconds, I killed the menu bar from a separate shell, and then returned to the loop and killed it - voilà!

So, basically from shell 1:

while true;

    > do;
    > defaults write com.apple.menuextra.clock "DateFormat" "EEE MMM d  H.mm";
    > done;

...then in another shell:

killall -KILL SystemUIServer

And then return to the first shell and kill the loop. I haven't restarted yet, but so far the change has stuck. HTH!

  • Thank you! I wrote a little sh script to set my format, works like a charm. This is probably not gonna last, but it's something. – previous_developer Apr 28 '15 at 22:09
  • Here is the script: pastie.org/10119105 Can be killed with CTRL+C after you see your format on menu. – previous_developer Apr 28 '15 at 22:25
  • Right on! Glad it helped...this one was vexing me for quite some time. I can't get it to persist across reboots. Sometime, if I am motivated, I guess I can use init or launchd to set it every time it boots... – jet_atx Apr 29 '15 at 3:46
  • 1
    I recall this has worked for me in the past, but it's not working on a new macOS Sierra machine for me today. – Matt McClure Apr 4 '17 at 17:12
  • 1
    Confirmed. I'm currently working on dotfiles on High Sierra and this does not work. – Matt Komarnicki Sep 3 '18 at 5:07

There is a specific Pref Pane for the menu bar Clock settings, separate to the Dates pref, which is for how dates are shown in Finder.
System Prefs > Date & Time > Clock

You can also access it directly by clicking the menu bar Clock, or typing "date" into Prefs search

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  • 1
    I actually want to put MY preffered format. These options are not enough. No year, no way to show month as number, etc.. This should be a pretty trivial task with terminal. I just don't know where to look. – previous_developer Apr 18 '15 at 19:15
  • Then you should ask that question separately. My answer simply points out that you were setting the wrong pref for the menu bar clock. – Tetsujin Apr 19 '15 at 11:18

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