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24 hour clock on boot screen?
- Thread starter Sumleilmus
- Start date
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Yes. But thanks. No solution to be found there. The time zone is correct, but not the format.
Er, what hardware and macOS are you using? I do not see what you show in your attached image. In particular, I do not see the toggle for "Show 24-hour time on the Lock Screen."
Your reply puzzles me greatly.
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bogdanw
macrumors G3
I see the same as@flowrider in General - Date & Time on MBA M1 Sonoma 14.2, although Apple doesn't mention "Show 24-hour time on Lock Screen" in the current documentation.
https://support.apple.com/guide/mac-help/change-date-time-settings-mchlp1124/mac
That setting changes values in /Library/Preferences/.GlobalPreferences.plist, AppleICUForce12HourTime - YES for 12 hours.
To set 24-hour, try from Terminal:
and reboot.
You may need to give Terminal temporary Full Disk Access for the command to work.
https://support.apple.com/guide/mac-help/change-date-time-settings-mchlp1124/mac
That setting changes values in /Library/Preferences/.GlobalPreferences.plist, AppleICUForce12HourTime - YES for 12 hours.
To set 24-hour, try from Terminal:
Code:
sudo defaults delete /Library/Preferences/.GlobalPreferences.plist AppleICUForce12HourTimeand reboot.
You may need to give Terminal temporary Full Disk Access for the command to work.
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Dude. Apple takes so long to fix stuff like that. I reported this ages ago. It’s been present since first Sonoma beta. I stopped reporting stuff because Apple doesn’t fix them
I just found this post and have the same problem as the original poster. I have a 2021 MBP M1 and had recently upgraded from Ventura to Sonoma 14.4.
But I have the 24-hour time set as well as show 24-hour time on the Lock Screen. The date and time is correct for my time zone CET.
However, only when I reboot the Mac and get the very first Lock Screen the time shows in 12-hour format. But when my Mac wakes from sleep and shows the Lock Screen it shows the 24-hour time correctly.
I found some other post suggesting to use sudo rm /var/db/timed/com.apple.timed.plist but this did not fix my problem.
Does anybody have this exact problem and found a solution?
But I have the 24-hour time set as well as show 24-hour time on the Lock Screen. The date and time is correct for my time zone CET.
However, only when I reboot the Mac and get the very first Lock Screen the time shows in 12-hour format. But when my Mac wakes from sleep and shows the Lock Screen it shows the 24-hour time correctly.
I found some other post suggesting to use sudo rm /var/db/timed/com.apple.timed.plist but this did not fix my problem.
Does anybody have this exact problem and found a solution?
AAGism
macrumors newbie
Same issue here. The option for "Show 24-hour time on Lock Screen" has even disappeared in the latest Tahoe beta. The FileVault Lock Screen does not respect this setting. Instead I've noticed it is dependent on the preferred language setting. Submitted a bug report which is all we can do for now.
AAGism
macrumors newbie
Submitted a bug report for this and dissapointingly Apple replied with "Investigation complete - Works as currently designed". Not sure the logic behind that but Apple appears to see this as a non issue despite the inconsistency between FileVault unlock screen and user unlock screen.
mypointofview
macrumors newbie
I just sent a bug report to Apple https://www.apple.com/feedback/macos/ – Maybe more folks could do the same to give the issue a bit more importance. I'm on macOS 15.6.1. I have a MacBook Air (M4), but Apple forgot to add this in the list of choices (so I chose M2). Here's what I wrote for the Feedback Area of User Interface
Boot screen clock won't comply with the system setting set to 24h format
The *boot* screen (File Vault) displays time in 12-hour format, despite the time display being configured in Settings to be 24-hour format. 24-hour format is OK across the system and on the Lock Screen after waking from sleep, but not on the boot screen.
I have a MacBook Air (M4), so you should update the list "Which computer are you using?"
Boot screen clock won't comply with the system setting set to 24h format
The *boot* screen (File Vault) displays time in 12-hour format, despite the time display being configured in Settings to be 24-hour format. 24-hour format is OK across the system and on the Lock Screen after waking from sleep, but not on the boot screen.
I have a MacBook Air (M4), so you should update the list "Which computer are you using?"
Just found this thread and came here to report that I'm seeing this same issue too. Running Mac OS Tahoe 26.0.1 on a 2021 M1 MBP. I tried the sudo command above but it didn't work - I haven't customised any settings previously therefore didn't have a .GlobalPreferences.plist file - running the command simply says the .GlobalPreferences.plist file not found.
Any one has any ideas how can I change the FV clock to 24 hours clock? I'm in Auckland, New Zealand, if that makes a difference...
Thanks
mypointofview
macrumors newbie
cambuimg
macrumors newbie
EDIT: If you use 24h time on your Mac, only the key AppleICUForce12HourTime will be present and will have value 1.
shows that
is set to 1.
However, running
(with and without sudo) results in:
It doesn't work, with or without Full Disk Access.
Code:
defaults read /Library/Preferences/.GlobalPreferences.plist
Code:
AppleICUForce12HourTimeHowever, running
Code:
defaults delete /Library/Preferences/.GlobalPreferences.plist AppleICUForce12HourTime
Code:
2026-05-31 15:09:04.542 defaults[5324:30009]
Domain (/Library/Preferences/.GlobalPreferences.plist) not found.It doesn't work, with or without Full Disk Access.
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