How to Change Microsoft Bookings from 12-Hour to 24-Hour Time Format
Question details
The user needs to change the time display format on their Microsoft Bookings page from a 12-hour clock (AM/PM) to a 24-hour clock.
- Product
- Microsoft Bookings
- Device & OS
- not provided
- Scenario
- Configuring public scheduling and booking pages for clients in regions that prefer the 24-hour time format.
- Observed behavior
- Microsoft Bookings continues to display 12-hour times despite the user having already adjusted standard regional and time-zone settings in other Microsoft 365 services.
Ensure you have administrator or owner access to the specific Microsoft Bookings calendar you wish to modify, as standard users cannot change page-wide settings.
Modify the Booking Page Language to a 24-Hour Format Region
Because the time format in Microsoft Bookings is strictly tied to the selected page language, you must choose a regional language variant that naturally defaults to the 24-hour clock.
Microsoft Bookings does not pull time format settings from your personal Outlook or Microsoft 365 admin center configurations. Instead, it relies entirely on the language selected directly within the Booking Page settings.
English (United States) defaults to a 12-hour clock. To get a 24-hour clock while keeping the text in English, you should switch the language to a regional variant like English (United Kingdom).
Log in to your Microsoft 365 account and open the Microsoft Bookings app.
On the left-hand navigation menu, click on 'Booking page' to access your public page configurations.
Scroll down to find the 'Language and time zone' section within the Booking page options.
Click the language dropdown and select a region that uses the 24-hour format, such as 'English (United Kingdom)'.
Click 'Save and publish' at the top of the page. Open your published Booking page to verify that the time slots are now displaying in the 24-hour format.
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Frequently Asked Questions
Why does my Bookings page still show AM/PM after I changed my personal Outlook settings?
Microsoft Bookings operates independently of your personal Outlook settings. It relies strictly on the language configuration set specifically on the Booking page settings menu, so personal timezone changes won't affect it.
Can I keep my Bookings page in English but use the 24-hour time format?
Yes. You can achieve this by selecting English regional variations that natively utilize the 24-hour clock, such as English (United Kingdom) or English (Ireland).
Will changing the page language alter the names of my custom services?
No, changing the regional language setting will only update default system text, dates, and times. Your manually entered service names, descriptions, and staff details will remain exactly as you typed them.
