Add, remove, or change time zones

At any time, you can change the time zone in Microsoft Outlook 2010 so that it matches your current geographic location. When the time zone is changed, this is the same as changing the time zone in Control Panel in Windows.

In this article


Change your time zone

When you change the time zone setting in Outlook 2010, all Calendar views are updated so that they display the new time zone, and all Calendar items reflect the new time zone.

  1. Click the File tab.
  2. Click Options.
  3. Click Calendar.
  4. Under Time Zones, type a name for the current time zone in the Label box.
  5. In the Time zone list, click the time zone that you want to use.

 Notes 

  • When you adjust time zone and daylight saving time settings in Outlook, Windows clock settings are also adjusted.
  • When Outlook is set to a time zone that observes daylight saving time, the clock adjusts for daylight saving time by default. You can turn off the adjustment. However, this is not recommended.
  • Some time zones do not have daylight saving time. When Outlook is set to time zone that doesn’t observe daylight saving time, such as Arizona in the United States, the daylight saving time adjustment cannot be turned on.

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Add a second time zone

Two separate time zones can be displayed in the Calendar. The two time zones can be, for example, your local time zone and the time zone of a city that you often travel to. The second time zone is used only to show a second time bar in Calendar view, and does not affect the way in which Calendar items are stored or displayed.

  1. Click the File tab.
  2. Click Options.
  3. On the Calendar tab, under Time Zones, select the Show a second time zone check box.
  4. In the Label box, type a name for the additional time zone.
  5. In the Time zone list, click the time zone that you want to add.
  6. If you want your computer clock to automatically adjust for daylight saving time (DST) changes, select the Adjust for daylight saving time check box. This option is available only in time zones that use daylight saving time (DST).

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Swap time zones

When you have two time zones displayed in Calendar, you can swap their positions.

  1. In Calendar, right-click in the time bar, and then click Change Time Zone.
  2. Under Time zones, click Swap Time Zones.

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Remove a time zone

  1. Click the File tab.
  2. Click Options.
  3. On the Calendar tab, under Time Zones, clear the Show an additional time zone check box.

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More about time zones in Outlook

The start and end times for items in the Outlook Calendar are saved in the Coordinated Universal Time (UTC) format, an international time standard similar to Greenwich Mean Time.

When you send a meeting request to an attendee in a different time zone, the meeting item is displayed at the respective local times on each person's calendar, but saved in UTC.

For example, a meeting organizer in the United Stated Pacific time zone sends a meeting request for 2:00 P.M. Pacific time to an attendee in the United States Mountain time zone. The attendee sees the meeting as starting at 3:00 P.M. Mountain time. In both cases, the meeting is saved as starting at the same UTC time of 10:00 P.M..

If two time zones are shown, the meeting organizer's time zone is used as the reference point. If you organize a meeting and display free/busy time for invitees from other time zones, their busy times are adjusted so that they appear correctly in your time zone. The second time zone is visible only when you view the calendar in day or week view.

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Applies to:
Outlook 2010