How does one remove or uncheck a time zone in iCal (Mountain Lion)?

I agree this should be a control in the Preferences pane. Why should I see a time zone I erroneously created only to be told I have to remove all timezone references? I'm pretty sure that breaches Apple's own design guidelines. Editing that list would certainly be critical to the usability of that tool. Having to resort to command line and kill all zones is crazy since it may destroy appointments already created in a time zone thus deleted.

Surely there's a better way, John Maisey?

Hi,

Not in the Calendar.app interface. You can remove the entire list by running the follwing Terminal command. You can then re-add the ones you want. Quit Calendar Copy the following single line into the Terminal (Applications > Utilities > Terminal.app) and press return.

defaults delete com.apple.iCal 'PersistentMenu-lastUsedTimeZones'

Let us know how it goes.

Best wishes

John M

This command

defaults delete com.apple.iCal 'PersistentMenu-lastUsedTimeZones'

was posted as a way to remove an unwanted time zone from iCal. Now, with OS 10.9, there still is no apparent way to remove unwanted time zones from Calendar. Does anyone know if this command with a change to the application name will still work?

Or, is there somewhere to manage the time zones list in Calendar (a somewhat obvious option, I would have thought).

Hi bayswater,

The command works in OSX 10.9 as posted:

defaults delete com.apple.iCal 'PersistentMenu-lastUsedTimeZones'

Calendar still uses preference files titled "iCal".

Best wishes

John M

Thanks. I wouldn't have thought it would with the name change for the app.

Hi,

I have upgraded to OS X Yosemite and when I run this command I get an error "Domain (com.apple.iCal) not found".

Do you know what the equivalent command would be on Yosemite?

Thanks in advance.

Hey,

I had the same problem. I played around with the defaults command for a bit and found the following worked:

defaults delete com.apple.iCal 'RecentlyUsedTimeZones'

Hope this helps someone.

Phil

First, list the existing items:

defaults read com.apple.iCal 'RecentlyUsedTimeZones'

Update the settings to contain only the items you like:

defaults write com.apple.iCal 'RecentlyUsedTimeZones' '("America/New_York", "America/Los_Angeles")'

This worked for me! Thanks 🙂