How to change the lock screen clock to 12-hour or 24-hour format in Windows 10

Lock Screen is the screen you see when you lock your PC (or when it's locked automatically after a period of time you're not using it). The lock screen will also show up at startup, logout, and idle for a certain minute. You will need to remove the lock screen in order to be able to see the login screen and log into Windows. Users can remove the lock screen by pressing, using the keyboard or by dragging it up with the mouse.

The clock on the lock screen shows the time in 12-hour format by default.

This guide will show you how to change the lock screen time format to 12 or 24 hours (also known as military time) in Windows 10.

To Change Clock to 12 hour or 24 hour Time Format on Current User Lock Screen

1. Press Windows Key+ R to open a Run dialog and then type control panel and press Enter.

2. To Change Lock Screen Clock to 12 hour Time Format for your Account

Change the time format for Long time to h:mm:ss tt, and click/tap on OK.

 3. To Change Lock Screen Clock to 24 hour Time Format for your Account

Change the time format for Long time to HH:mm:ss, and click/tap on OK.

To Change Clock to 12 hour or 24 hour Time Format on Default Lock Screen

1. Press Windows Key+ R to open a Run dialog and then type control panel and press Enter.

2. To Change Lock Screen Clock to 12 hour Time Format for your Account

Change the time format for Long time to h:mm:ss tt, and click/tap on OK.

 3. To Change Lock Screen Clock to 24 hour Time Format for your Account

Change the time format for Long time to HH:mm:ss, and click/tap on OK.

4. Click on the Administrative tab. Next Clickon the Copy settings button

5. Check the Welcome screen and system accounts box, and click on OK

6. Click on OK