Fix Incorrect Time Zones for iPhone Calendar Events in Outlook for Mac
Question details
Calendar events created on an iPhone display in an incorrect time zone, such as UTC, when viewed in Outlook for Mac.

- Product
- Outlook for Mac
- Device & OS
- macOS and iOS
- Scenario
- Syncing scheduled events between an iOS device and the Outlook for Mac client.
- Observed behavior
- Events created on the iPhone appear in UTC instead of the local time zone (e.g., Eastern Time) in Outlook for Mac, despite showing correctly on the web or mobile app.
Ensure your iPhone and Mac are connected to the internet, and verify whether the newly created calendar events display correctly on Outlook on the Web before altering your local application settings.
Verify and Sync Time Zone Settings Across All Devices
Inconsistent time zone configurations across your iPhone, Mac operating system, and Outlook applications are the most common cause of event syncing errors. Aligning these settings will resolve the display discrepancy.
Outlook for Mac relies on consistent time zone data from both your system preferences and the Microsoft Exchange server.
When an event is created on an iPhone, it is stamped with the device's local time zone. If Outlook for Mac or the web client is set to a different primary time zone, the event may be improperly translated into UTC or another incorrect time.
Go to Settings > General > Date & Time on your iPhone. Ensure 'Set Automatically' is toggled on, or manually select the correct local time zone.
On your Mac, open System Preferences (or System Settings), navigate to Date & Time, and ensure your system is set to the correct local time zone.
Open Outlook for Mac, click on 'Outlook' in the top menu bar, select 'Preferences', and choose 'Calendar'. Under the 'Time Zones' section, confirm that the primary time zone matches your system settings.
Log into your Outlook account via a web browser. Click the Settings (gear) icon, go to 'General' > 'Language and time', and verify the time zone selected matches your local area.

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Frequently Asked Questions
Why do my calendar events show in UTC instead of Eastern Time?
This usually occurs when there is a mismatch between the time zone settings on the device where the event was created (iPhone) and the application where it is being viewed (Outlook for Mac or Web).
How do I change the time zone for a single event in Outlook for Mac?
Double-click the calendar event to open its details, click on the 'Time Zones' button in the top ribbon, select your desired time zone from the drop-down menu, and click Save.
Will updating Outlook for Mac fix calendar syncing bugs?
Yes, Microsoft frequently releases updates to address synchronization and display issues. You can check for updates by navigating to Help > Check for Updates in the Outlook menu bar.
Does the iPhone Calendar app override Outlook settings?
The iPhone Calendar app stamps events with the local device time zone when they are created. If Outlook is configured to a different primary time zone, it may interpret the timestamp incorrectly during the sync process.




