Вы искали: use 24 hour clock: (Английский - Немецкий)

12 hour clock
12-stunden-uhr

12-hour clock
2-mal-12-stunden-zählung

24 hours clock
die uhr von 24 stunden

the cia has also a 24 hour clock.
der cia hat auch eine uhr der 24 stunde.

• 24 hours clock with alarm
• 24 hours clock with alarm

the hour (24-hour clock) using the locale's alternative numeric symbols.
the hour (24-hour clock) using the locale's alternative numeric symbols.