Juniper Allegro CE Owner's Manual page 28

AM / PM Removal
You may have need for a clock on the Allegro desktop, but to conserve
on the amount of space it takes up in the system tray you can remove
the AM/PM setting after the clock. This function will shift the time
into military time (2:00 PM = 14:00). To do this complete the following
steps:
1) Select Start|Settings|Control Panel, the following screen will
appear:
2) Double tap on the Regional Settings icon:
Page 2-16 Hardware Features