noun
10 PM; 22:00
The 24-hour clock time for 10 PM, used in schedules, announcements, and formal contexts.
最終バスは２２時発です。
The last bus departs at 10 PM.
会議は二十二時まで続いた。
The meeting continued until 10 PM.
午後１０時 is the 12-hour clock equivalent, more common in everyday conversation.
Compound of 二十二 (にじゅうに, twenty-two) and 時 (じ, hour), following the standard Japanese 24-hour time format.