MSOutlook.info

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Changing time and date display settings

The date on my emails is now dd/mm/yyyy, but I want it to be mm/dd/yyyy. Also, I want Outlook to use a 24 hour clock rather than the AM/PM format.

Where do I change the time and date format?

Date & Time buttonOutlook follows your default time and date settings as you have configured them in Windows.

These settings are used not only to display the time and date on your send/received columns but also in your Calendar, Tasks and some other places and properties.

Windows 10

Start-> Settings-> Time & Language-> Date & Time-> Change date and time formats

Time and date format configuration in Windows 10.
Time and date format configuration in Windows 10.

Note: Custom formats can be configured by clicking on the “Additional date, time, & regional settings” link and then selecting “Region”. This will bring you to the classic Control Panel applet of Windows 8 and previous.

Windows 8 and Windows 8.1

Control Panel-> Clock, Language, and Region-> Region

Time and date format configuration in Control Panel.
Time and date format configuration in Control Panel.

Windows 7

Control Panel-> Clock, Language, and Region-> Regional and Language

Windows Vista

Control Panel-> Clock, Language, and Region-> Regional and Language Options-> button: Customize this format…-> tabs: Time and Date

Windows XP

Control Panel-> Date, Time, Language, and Regional Options-> Regional and Language Options-> button Customize…-> tabs: Time and Date

Custom formats

You can use the drop down lists to select a preconfigured format or the button Additional Settings…-> tab Date to type a custom format.

The time formats that use “H” are 24 hours clocks. The formats which use “h” and have “tt” at the end are AM/PM clocks.

On the Time tab in the “Advanced settings” there is also a small explanation about the time notations.

Customize Format - Region Settings - Date
You can further customize your date settings in the Region settings of Windows.

Outlook column formatting

Custom View buttonAdditionally, in Outlook you can customize your view to change how the time or date is displayed even more but always based on your Windows’ defaults;

  • Outlook 2007 and previous
    View-> Arrange By-> Customize…-> button Format Columns…
  • Outlook 2010, Outlook 2013 and Outlook 2016
    tab View-> View Settings-> button Format Columns…

Here you can select the column “Received” or “Sent” or any other column displaying a date and use the Format drop down list to select a display format of choice.

For instance, I have my “Today’s Unread Mail” Search Folder to display the time only as I of course know already that I have received it today. Not showing the date gives me a better overview and leaves room for other information.

Customize the date format of the columns in Outlook
Customize the date format of the columns in Outlook.


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