By default, the time in Windows 7 system tray is displayed in 24 hour format.
Here’s how to display the time in Windows 7 system tray in 12 hour format with AM/PM notifications:
1. Go to ‘Control Panel>Region and Language’.
2. In ‘Formats’ tab, click on ‘Additional settings…’.
3. In ‘Time’ tab, change ‘Long time:’ to hh:mm:ss tt and click ‘OK’.
4. Click ‘OK’. You should now see the time in Windows 7 system tray in 12 hour format with AM/PM notation.
Thank you.