Select the display settings on the left side of Settings, and then click the time and date menu. Select the date and time, slide up and down to adjust the displayed number, and then you can choose to view the 24-hour clock. If unchecked, the default display mode is 12 hours.

After setting, click the check box at the top right to save the modification of time and date, and select the menu option on the left as Other. After setting, click Close to return to the main interface, where you can see the setting time.