To change the display format of the time follow the steps below
Windows Vista
- In Windows, click the Start button
- Click Control Panel, click on Clock, Language, and Region.
- Click Regional and Language Options.
- Click Customize this format.
- In the Time tab, do one of the following:
- To set the 24-hour format, select HH: mm: ss
- To set the 12-hour format, select hh: mm: ss tt
Windows XP
- In Windows, click the Start button
- In Control Panel, click Regional Options, date, time and language.
- Click Regional and Language Options.
- Click Customize.
- In the Time tab, do one of the following:
- To set the 24-hour format, select HH: mm: ss
- To set the 12-hour format, select hh: mm: ss tt