Set the System Time, Date and Time Zone
By: Arie SlobDouble click the clock on the TaskBar, this will open the Date/Time Properties, from where you can set the system time, date and time zone.
To change the display of the clock on the taskbar to 24-hour format:
- Open Control Panel
- Open the Regional Settings icon
- Select the Time tab
- In the Time style section select HH:mm:ss