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Fix Microsoft Bookings Displaying 12-Hour Time Instead of 24-Hour Format

Muhammad Talha Oct 12, 2026 868 views

Question details

The user needs Microsoft Bookings to consistently display appointment times in a 24-hour format across all views.

How to Fix Microsoft Bookings Displaying 12-Hour Time Instead of 24-Hour Format

Product: Microsoft Bookings
Device & OS: not provided
Scenario: Setting up a booking page and attempting to align the appointment time display with European or 24-hour regional preferences.
Observed behavior: The Bookings page displays appointment times in a 12-hour format, particularly for guest users, even when the Microsoft 365 language and regional settings are configured for a 24-hour format.

Before you start

Ensure you have administrative access to your Microsoft 365 Bookings page and verify that your global Microsoft 365 account settings are already configured to a region that utilizes a 24-hour format (such as Amsterdam or Germany).

Solution 1Recommended

Sync Microsoft 365 Regional Settings with Bookings

Force the Bookings application to inherit your global Microsoft 365 language, time zone, and 24-hour regional formatting.

Microsoft Bookings can sometimes disconnect from your main account's regional settings. Manually syncing these preferences often resolves formatting discrepancies for signed-in users.

Access Bookings Settings

Log into Microsoft 365 and open the Bookings application. Navigate to the specific Booking page settings from the left sidebar menu.

Sync Microsoft 365 Settings

Look for the regional and language settings. Check the box or toggle for 'Use my Microsoft 365 settings' and click on 'Sync Settings' to pull your 24-hour format preferences into the app.

Restart and Verify

Close the Bookings application completely. Reopen your Bookings page in a new browser tab or an incognito window to verify if the 24-hour format is correctly applied.

Sync Microsoft 365 Regional Settings with Bookings

Guest User Limitations: If the 24-hour format works when you are signed in but guest users still see a 12-hour format, this is a known formatting bug on Microsoft's end. You will need to report this issue directly to Microsoft Support for a permanent fix.

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Frequently Asked Questions

Why do guest users see a 12-hour format while I see a 24-hour format?

Guest users view the Bookings page without your signed-in profile's localized settings. The Microsoft system sometimes defaults public guest views to a 12-hour format regardless of the creator's settings. Reporting this to Microsoft Support helps prioritize a system-wide fix.

How do I change the global time format for my Microsoft 365 account?

Click on your profile picture in Microsoft 365, go to 'View account', select 'Settings & Privacy', and update your 'Language & Region' to a location that defaults to 24-hour time (like the UK or Germany).

How do I ensure clients book in their correct local time zone?

In your Microsoft Bookings page settings, ensure the option 'Always show time slots in business time zone' is unchecked. This allows the page to automatically detect and display available slots in the guest visitor's local time zone.

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