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is it possible to add UTC as a timezone in sierra

In previous OS X versions I was able to type in UTC for the timezone and not have a geographical location in the time zone preferences setting dialog, just UTC.

Also was able to update / patch the timezone files via terminal to add / correct them.

Still looking to be able to do that in Sierra, but it does not seem to accept the UTC time zone assignment in the timezone dialog using the command:

sudo ln -sf /usr/share/zoneinfo/UTC_/etc/localtime

Does seem to have accepted it in the underlying BSD, using the command:

systemsettings -gettimezone though.

Inquiring mind thinks that it has something to do with UTC not being listed as an available timezone in the command:

systemsettings -listtimezones

No, because UTC is not a time zone. But GMT is and is the same time as UTC

• GMT is a time zone officially used in some European and African countries. The time can be displayed using both the 24-hour format (0 - 24) or the 12-hour format (1 - 12 am/pm).
• UTC is not a time zone, but a time standard that is the basis for civil time and time zones worldwide. This means that no country or territory officially uses UTC as a local time.

UTC is the same as GMT (Greenwich Mean Time), isn't it? You can easily specify that in the "Date & Time" System Preferences pane, then choose Time Zone tab - then just have to deselect "Set time zone automatically using current location" checkbox and then click near London to set GMT/UCT.

Good luck...

No, because UTC is not a time zone. But GMT is and is the same time as UTC

• GMT is a time zone officially used in some European and African countries. The time can be displayed using both the 24-hour format (0 - 24) or the 12-hour format (1 - 12 am/pm).
• UTC is not a time zone, but a time standard that is the basis for civil time and time zones worldwide. This means that no country or territory officially uses UTC as a local time.

I understand that ... and I have fought this battle previously.

But my gripe still remains that I live in one location but my work strongly requests, and MY PREFERENCE, (as the user that paid big bucks for the hardware and software) is to use UTC for timestamps on all activities. The watch I USED to wear at work is still set to UTC because any logs I worked on MUST be done in UTC, and any electronic data stored must use UTC for unambiguous time stamps.

I would sure like to be able to do that, but still have all the regional settings otherwise in the location I choose, or HOW ABOUT have a regional setting UTC where all the otherwise pre-configured regional settings are USER CHOICE.

Users preferences no longer matter to the "big brother/sister" ...

Let Apple know…

Product Feedback - Apple

Tell Apple

All macOS activity is already referenced using a temporal offset to UTC specified by a user's localization and regional preferences. If you examine log activity for example, its entries specify local time with reference to a positive or negative offset to UTC. It's up to the individual app developers to determine how that information is used or displayed. For more information read https://developer.apple.com/documentation/foundation/timezone.

You don't have to do anything other than what is already available to the user in System Preferences. Stop messing with arcane Terminal commands. They won't accomplish anything, because Mac's file system already uses UTC. The localized time format is merely provided for convenience.

The "Apple Recommended" reply you already received is 100% correct.

You can set London – London's timezone is GMT+0. Since GMT is the same as UTC, this should solve your problem.

最後更新：2017-08-24 11:32:40

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