午後 refers to the afternoon, and with clock times to any hour from noon to midnight: 午後11時 is 11 p.m.
Common collocations
- 午後〜時: X PM (e.g., 午後3時 = 3 PM)
- 午後から: from the afternoon
- 午後中: all afternoon
Common expressions
Similar words
- 午前: AM, morning (before noon)
- 午後: PM, afternoon (noon to midnight)
- 正午: noon (exactly 12:00)
Usage
In Japan, 24-hour time is common in schedules (e.g., 15:00 instead of 午後3時), but 午後 is widely used in conversation.