Can the Windows clock be configured to display a 24-hour-based time? [duplicate]

Is it possible to make the windows clock display its time in a 24-hour format instead of the default 12-hour format? There doesn't appear to be any way to do this via the UI, but I'm wondering if maybe there's a registry setting somewhere I don't know about.

Thanks!

Solution 1:

Yes you can. It's not on the Time control panel, it's on the Regional Options. You'll have to make a custom region that uses 24h time. The time format should be "H:mm:ss" instead of "h:mm:ss".

Solution 2:

With Windows 10 it's a bit different, you can go to the time settings via clicking on the clock, then into date & time formats. Once you've done that you can change the formats to HH:mm (uppercase important) under short & long. It's a new menu and a bit easier to get into, but similar to older versions of Windows as per the other answers.